Releases

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20.38.12

#815 etl::remove_if calls predicate twice for first iterator, where predicate returns true.

#885 Bug: queue move-assignment is not compiling

Modified UnitTest++ SUITE macro for better VS2022 intellisence compatibly

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20.38.11

Fixes

#803 etl::unordered_map buffer overflow

#805 legacy etl::bitset set/reset does not work if the element type is greater than 8 bit

#815 etl::remove_if calls predicate twice for first iterator, where predicate returns true.

#819 etl::optional cannot return an optional object of self from member function

#820 etl::send_message does not allow for non-virtual calls

#825 Fixed extent etl::span shouldn't allow default constructor

#827 Declaration order for etl::first_set_bit_position in binary.h

#829 Possible bug on assign of etl::array

#830 gcc warning - potential null pointer dereference using etl::map

#845 etl::message_packet missing a copy constructor

#857 etl::expected emplace methods are missing-return

#868 etl::variant is missing comparison operators

#869 etl::fsm::receive function can call p_state process_event also when p_state is nullptr

#873 Validate allocated DataNode is not null to prevent gcc Wnull-dereference

#874 Allow direct removal of a node from an etl::intrusive_list

#877 Optimize find_first_not_of and find_last_not_of on string_view

#879 Render include paths relative (limits.h & random.h)

#855 Strange expression in volatile atomic operator--

Pull Requests

#782 Set is full error when adding existing item

#804 etl::variant (variadic) default constructed state

#812 Implement SAE-J1850 CRC8

#832 Only copy/move storage value when optional is valid

#843 In subspan function, add static checks on extents

#849 Fix string_stream add missing initializations of const format specifiers

#850 Fixed names according to Arduino's guidelines

#854 In-place construction of shared_message

#858 Fix unique_ptr assigning nullptr to a null unique_ptr causes an assert

#861 Implement constexpr strong typedef

#862 Update ETL_CONSTEXPR and C++14 designation from type_def

#863 Add eq and ne operators for compare utility

#865 Add utils compare equality operator

#879 Make include paths to private files relative

Features

#774 Truncating access for etl::bitset - Added extract() functions.

#806 etl::variant_pool should support C++17 variadic parameters (supports C++11 variadic parameters)

#812 Implement-SAE-J1850-CRC8

#818 Apply code spell check across entire code base

#841 Change push to push_back on containers, so they can be used with std::back_inserter (Added

push_insert_iterator)

#847 Add has_active_timer to callback_timer. (Added to all timers).

#883 Add etl::partition and etl::nth_element algorithms

#864 cyclic_value first/last methods. Make first() and last() static for template based limits specialisation

Changes without a GitHub issue#

Added etl::mem_fn (clone of std::mem_fn)

Added etl::generate algorithm (clone of std::generate)

Added binary functors for ~ & | ^

Added etl::is_default_constructible & etl::is_default_constructible_v

Added syntax checks to GitHub CI

Refactored etl::optional implementation

Fixed etl::optional operator =() for invalid values with non-pod types

Refactored message_packet constructors

Added specific copy and move constructors to message_packet for C++17 and above.

Changed optional 'simple' types implementation for C++14 constexpr compatibility

Fixed implicitly disabled copy constructor for message_packet

Modified accepts() message_router functions to interrogate subscribed and successor routers to achieve

consistency.

Fixed nodiscard keyword errors

Removed unused ETL_STATIC_CONSTANT

Make binary functor operator() const

Improved display of CHECK_EQUAL_HEX in UnitTest++

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20.38.10

#800 Prioritize ETL_TARGET_OS_* for mutex selection

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20.38.9

Added etl::crc1 (parity)

#799 Iterator returned by crc.input() does not satisfy std::output_iterator

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20.38.8

#795 etl::private_variant doesn't fully respect the chosen error reporting.

#797 Undeclared FP_NAN, FP_INFINITE and FP_ZERO

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20.38.7

Updated CI scripts

Refactored GitHub CI workflows

Updated build script text

Added additional etl::make_lsb_mask and etl::make_msb_mask binary functions

#779 hash.h: warnings produced with -Wfloat-equal

#781 etl::multi_span::iterator::operator *() fails if first span is empty

#780 endian enum_type produces useless-cast warnings

#783 Cannot insert existing value to full set

#786 Added u8string

#787 etl::expected doesn't compile with ETL_LOG_ERRORS

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20.38.6

#777 Allow Building Tests as Submodule and GCC < 11

Refactored etl::itr_swap for maximum efficiency.

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20.38.5

#776 Add missing semicolons

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20.38.4

#773 Return raw pointer for etl::multi_span::operator->()

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20.38.3

#767 etl::pool silently produces unaligned allocations for types with stricter alignment requirements than built in

types

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20.38.2

#749 Code change causes warning with armcc compiler

#753 IAR's overload resolution struggles with etl::span::span(etl::array&)

#754 ambiguous etl::bit_stream_reader::bit_stream_reader() for some etl::span

#755 warning about constexpr in array.h

#756 Parameter pack compilation error

#758 Move assignment not working for non-empty containers

#761 Make "private" includes relative

#765 etl::optional cannot be constexpr

#766 etl::unique_ptr::reset() can call deleter with nullptr argument

Re-enabled bit_stream_writer tests

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20.38.1

Deleted

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20.38.0

#696 fsm/hfsm self-transitions

#702 etl::message not trivially_copyable

#744 Feature request: Get time when next timer will expire etl::callback_timer

#745 Assertion triggered in hash.h when compiling for MSP430

#746 Missing etl::legacy::variant overload of emplace with zero arguments

#748 armcc error on vector::insert

Fixed unexpected pool release behaviour when the pool is empty

Added C++03 compatible etl::move and etl::move_backward

Allow C++03 delegate in etl::callback_timer

Change to require semicolons after debug count macros

Re-enabled tests for etl::string_ext

Removed redundant #includes

Added MutexMessageRouter example

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20.37.3

#737 etl::equal specialisation for etl::span is deduced wrongly when using STL and CPP20.

Added C++20 four iterator std::equal variants.

#738 etl::expected assignment operator won't work when TValue and TError are the same type.

Changed assignment from etl::unexpected to use variant::emplace instead of direct assignment.

#739 Could not compile ETL with gcc 9.4.0 (C++11).

Added compatibility for GCC-9 + C++11. Added missing return reference from emplace member function in

variant_variadic.h

Removed many -02 warnings for GCC-13

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20.37.2

#733 Fix etl::expected assignment from etl::unexpected.

Added unit tests for changes

Added missing etl::forward in etl::expected::emplace

#734 Add missing new line at end of files.

#735 Fix bug in minmax include mismatch detection.

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20.37.1

#723 Added missing final CR/LF to result.h.

Fixed etl::optional arrow and dereference operators.

Enhanced min/max push/pop headers. Detects mismatched header includes.

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20.37.0

#708 Fix missing class key with friend.

#709 intrusive_list::iterator operator -> should not dereference pointer before return.

#710 Calling accept on etl::variant visits a copy instead of the original object.

#711 Added etl::is_forward_link, etl::is_bidirectional_link and etl::is_tree_link to intrusive links. Added

Constructors, access and status member functions to intrusive links.

#712 Unable to use etl::optional with non-default-constructible POD objects.

#716 etl::variant (variant_varadic) default constructed state

#720 etl::optional rvalue value_or() broken

#722 Bitset accesses memory out of bounds

#725 variant_pool create method should use etl::forward

Modified etl::visitor to allow direct specification of the argument type.

Added etl::is_visitor trait.

Removed default link type for etl::intrusive_list and etl::intrusive_forward_list

Note: The updates to etl::visitor changes how arguments are passed. Previously arguments would always be

passed by reference. The new behaviour is to pass the arguments exactly as the template parameter specifies.

The declaration below defines virtual visit functions that accept Square&, Circle& and const Triangle&

etl::visitor<Square&, Circle&, const Triangle&>

________________________________________________________________________________________________

20.36.1

#700 Compilation error for [] map operator. Fixed map const placement new issue.

Re-enabled memcast tests.

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20.36.0

#663 Make unit tests compile for C++20

#675 Compilation error in optional.h

#684 Added sanitization fix for MinGW

#687 Build failure. constexpr keyword before template keyword

#689 Add as_bytes and as_writable_bytes

#690 Add rvalue accessors to expected and optional and update constructors

#692 operator [] for flat_map always calls default constructor for mapped_type

#695 Visiting a const variant (variadic)

#698 Behaviour of bidirectional_link nodes. Links are now cleared when unlinked

#699 Optional(POD) operator bool explicit

Optimised map/flat_map/unordered_map [] operator and insert()

Removed [] operator for reference_flat_map

Unit tests compile for C++11

Fixed C++11 constexpr compatibility

Removed redundant const in template parameters

Updated CI scripts to enable C++ standard and optimisation selection

Updated static constant definitions

Fixed incorrect return types for reverse iterator begin() & end()

Updated C++ standard conditional compilation for reverse iterator functions

Fixed latest Address Sanitizer issues

Message packet unused parameter fix

Added ETL_OR_STD17 macro as the namespace for size()

Added Tasking compiler

Fix type traits generator

Fix test array sizes

Changed some ETL_ASSERT macros to ETL_ASSERT_OR_RETURN

Updated CMake files to allow C++ standard selection

Replaced ETL_ASSERT_AND_RETURN with ETL_ASSERT_OR_RETURN

Changed native char8_t check

Renamed Github vs2022.yml to visual-studio.yml

Updated Unittest++ checks

Comments and noexcept updates to placement new

etl::variant (variadic) refactor and updates for C++ standards compatibility

etl::overload available in C++17 only

map/flat_map speed optimisations

Various C++03 compatibility updates for maps

Refactored Bash compilation scripts to allow selection of C++ standard and optimisation level

Renamed Bash compilation scripts. Changed 'sanity checks' to 'syntax checks

Some internal constant case changes from all upper to capital case

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20.35.14

#664 Migrate ETL project from VS2019 to VS2022

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20.35.13

#649 Fixed the false positive array-bounds errors for ETL unit tests.

#652 Fixed false positives maybe-uninitialized errors for ETL unit tests.

Moved virtual functions in etl::fixed_sized_memory_block_allocator from private to protected.

________________________________________________________________________________________________

20.35.12

#615 Addition of etl::expected

#649 Changed intrusive_list and intrusive_forward_list iterator constructor parameter from reference to pointer.

#667 etl::span copy constructor with original span with fixed extent causes pend iterator to be invalid

#668 byte_stream changes that add error exceptions have changed previous behaviour

#670 span equality operators

#672 HFSM-specific start() and reset()

Fixed span templated copy constructor

Added destination_router_id parameter overrides to receive() virtual functions

Added ""_sv string view operators

Added M17 CRC

Added repair() to etl::circular_buffer

Added etl::contruct_object_at, etl::get_object_at and etl::destroy_object_at

Added etl::is_aligned, etl::alignment_exception and etl::alignment_error

Removed unnecessary code in etl::vector_ext::repair()

Updated sanity check make files

C++03 compatibility improvements

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20.35.11

Added emplace by index to variant (variadic)

#660 byte_stream_reader::skip error

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20.35.10

#659 emplace member functions return reference to emplaced value

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20.35.9

#657 -Wpedantic-failure. Removed superfluous semicolons

#653 CMake - Don't warn on tag missing when subproject

#651 result<T, void> specialization

#650 Fix result<void, E> default ctor

Removed Ubuntu 18.04 from Github Actions

Added Ubuntu 22.04 to Github Actions

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20.35.8

#648 Improve is_constructible, is_copy_constructible, is_move_constructible for type traits with default

definitions

#645 Avoid 'missing return statement at end of non-void function' in etl::visit<>().

Removed unused ETL_USE_MEM_BUILTINS option

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20.35.7

Updated etl::delgate to handle const functors correctly

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20.35.6

#643 Don't use push_macro and pull_macro with Tasking compiler

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20.35.5

#641 Incorrect C++03 enable_if syntax

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20.35.4

#639 Only build tests if top level project

________________________________________________________________________________________________

20.35.3

#636 Fix bug in etl::optional::emplace for pod type specialisation

________________________________________________________________________________________________

20.35.2

#634 Strange behavior in move assignment of optional

________________________________________________________________________________________________

20.35.1

#628 Fixed set of ETL_NO_STL flag in meson.build

#631 unique_ptr derived copy or move to base does not compile

Removed duplicate include in etl::array_view

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20.35.0

#596 Helper functions to convert strings to numeric values. etl::to_arithmetic

#600 Fix 'maybe-uninitialized' g++ error on macros

#601 Move __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS before #include <stdint.h>

#602 Replace ETL_COMPILER_ICCAVR by ETL_COMPILER_IAR

#603 Add back/front insert iterator

#604 Update test sources in meson build

#605 Special case check for hashing -0.0

#606 Fix non-usage of key equal function

#610 Added select1st and select2nd

#612 Automatically detect native endianness for IAR compiler platform

#613 Fix bare assert in reference_counted_object.h

#614 unaligned types: use unsigned storage type

#615 Addition of etl::expected (partial). Implementation of etl::unexpected

#616 Provide cmake library for UnitTest++

#618 fix bug in find_next of (new) bitset class

#621 No need to initialize the C-compiler, small speed improvement

#626 Empty etl::optional ctor storage initialization performance

Removed constexpr for etl::bit_cast due to unreliability of compiler support

Added has_value() as an alias for is_value() for etl::result (consistancy with STL conventions)

Added ETL_ERROR_WITH_VALUE macro for exceptions that require a value

Changed scaling template parameter for etl::scaled_rounding to uint32_t

Remove redundant etl::pair functions

Updated string_view and char traits

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20.34.0

Changed explicit message constructor for unsupported message types

Added etl::circular_iterator and circular iterator extensions to etl::span

Added etl::bitset_ext

Added etl::lsb_mask, etl::make_lsb_mask, etl::msb_mask and etl::make_msb_mask to binary utilities

Updates for unordered maps and sets for an API that better matches the STL

Fixes for etl::result<void, TError>

Deleted copy constructors for etl::circular_buffer_ext, etl::indirect_vector_ext and etl::vector_ext to

eliminate dangling pointers

Fix non-C++03 code syntax

Fixed unordered container equality tests to match STL

#581 Hash function for enums

#583 Permit non-default-constructable hashes and key-equals

#584 unordered_set::const_iterator has incorrect value_type

#585 Fixed etl::result<void> being unusable due to deleted default constructor

#587 Fixed IAR build warnings in message_packet

#589 Add minmax_push.h/minmax_pop.h includes

#593 Workaround for __has_include(<...>) and ICCAVR

#591 Automatically define __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS

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20.33.0

Added etl::message_broker to message framework

Added 'successor' parameter constructors to all etl::imessage_router derived classes

Added etl::binary_search to algorithm.h

Standardise conditional compilation macros for ETL_USING_CPP11 and ETL_USING_STL

#546: Added a new variant of bitset that may be constexpr

Removed the use of ETL_FORCE_CONSTEXPR_ALGORITHMS as all algorithms may be constexpr

Rationalised etl::send_message functions

Fixed implicit virtual warning for etl::vector

Fixed C++03 delegate compatibility

Added missing char_traits unit tests and char_traits bug fixes

Added default message id constructors

Added ability to set the bitset from wchar_t, char16_t and char32_t

Added ARM5 and ARM6 compiler compatibility for GCC atomics

#579: Fixed Unexpected namespace for variant with non-CPP11 compiler

#580: Fixed numeric_limits redefinition for gnu c++20

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20.32.1

Added size only constructor, set_buffer() and is_valid() members to circular_buffer_ext

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20.32.0

#571 Activate GCC and clang compiler warnings

#575 Bip buffer improvements

#576 Invoke function pointers with parenthesis

#574 Allow users to remove SYSTEM keyword because it forces C linkage for some gcc versions

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20.31.3

#569 Fixed swap function for circular_buffer_ext

#568 Fixed circular_buffer iterator -> operators

Optimised container move for external buffers for etl::list and etl::forward_list

Added functions and macros to etl::debug_count

Added tests for error handler macros

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20.31.2

Fixed ETL_ASSERT_XXX macros for ETL_IS_DEBUG_BUILD and !defined(ETL_LOG_ERRORS)

________________________________________________________________________________________________

20.31.1

Addition of extra ETL_NODISCARD and ETL_NOEXCEPT to etl::span & etl::poly_span.

Fixed warnings for initialisation order for some etl::poly_span constructors.

________________________________________________________________________________________________

20.31.0

Added etl::poly_span

Refacted parts of etl::span, including prevent compound statements in constexpr methods for C++11

Added etl::is_enum

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20.30.1

Fixed #560 Unable to upcast legacy variant.

Refactored legacy variant to remove upcast functors.

Added upcast_ptr, is_base_of & 'not a base' error exception to legacy variant.

If ETL_USE_LEGACY_VARIANT is defined then legacy variant is in the etl namespace.

If ETL_USE_LEGACY_VARIANT is not defined then legacy variant is in the etl::legacy namespace.

Added non-member etl::send_message for etl::shared_message

Green Hills compiler compatibility

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20.29.3

Updated message_packet_generator.h to match etl::message_packet changes.

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20.29.2

#557 QueuedFSM example does not compile.

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20.29.1

Added etl::byte_stream_overflow assert to byte_stream_reader 'skip'.

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20.29.0

Added etl::bit_stream_writer

Added etl::bit_stream_reader

Deprecated etl::bit_stream

Added callback option to etl::byte_stream_writer

Added error exceptions to byte_stream_writer

Added ETL_NODISCARD to etl::delegate 'create' and 'is_valid' functions

Added etl::visit support to etl::variant

Refactored C++17 message_packet

Refactored etl::atomic implementations to allow non-(integrals/pointers/bool)

Refactors etl::vector and etl::deque resize() to take const reference parameter

Renamed ETL_ALWAYS_ASSERT to ETL_ASSERT_FAIL

Removed duplicate void_t definition

Removed duplicate etl::declvar definition

Renamed cumulative_moving_average to pseudo_windowed_moving_average to more accurately reflect its algorithm.

Changed etl::debounce internal state names to avoid clashes with Arduino macros.

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20.28.0

Fixed issues raised by sanitizer.

Added conditional compilation for 8 bit type in hash.h

Fixed warnings for 64bit compilation.

Fixed sanity check includes.

Fixed incorrect returned span length for byte stream read.

Updates to etl::successor and derived classes.

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20.27.3

#531 Fixed: Compilation of etl::reference_counted_message_pool with ETL_LOG_ERROR

enabled due to non-public inheritance.

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20.27.2

Added scripts to automatically update version information.

Added ETL version information to etl::traits.

Small optimisations for computing indexes for queues & cyclic_value.

#530 Fixed: etl::nth_type not implemented correctly.

#521 CMake: Add package version file for installation.

#525 Fixed: cplusplus constant type.

#517 Fixed: unused-local-typedefs warning.

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20.27.1

Fixed undefined macros when compiler type is defined by the user.

________________________________________________________________________________________________

20.27.0

Added etl::functor for wrapping global/static functions in a functor.

Added etl::member_function_wrapper for converting a member function to a static function.

Added etl::functor_wrapper for converting a member function operator to a static function.

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20.26.0

Added constexpr support for etl::unaligned_type.

Added etl::traits namespace containing traits mirroring many ETL macros.

Traits are const for C++03, constexpr for C++11 and above.

Removed some uses of GCC builtins due to compatibilty with constexpr.

etl::swap is now ETL_CONSTEXPR14.

Changed ETL_ENDIANNESS_IS_CONSTEXPR to ETL_HAS_CONSTEXPR_ENDIANNESS.

Changed ETL_CONSTEXPR17 to ETL_CONSTEXPR14 for reverse iterators

Added template wrappers around memcpy, memmove, memcmp, memset & memchr.

The counter in etl::debug_count is atomic, if available.

Embedded essential UnitTest++ source into the project, as it is no longer maintained on GitHub.

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20.25.0

Added message_timer_interrupt

Added callback_timer_interrupt

Changed message_timer_atomic and callback_timer_atomic to require an atomic counter template type.

Added extra condition compile macros to control std::initializer_list.

Initializer list tests are in a separate project.

Modified etl::instance_count to take an optional counter type.

Renamed Arduino files to stop PlatformIO getting confused.

Changed from C cast to C++ cast in memory.h

Always use stddef.h

Modified WCHAR_MIN and WCHAR_MAX checks.

Added char8_t type.

Fixed 'unused function parameter' warnings.

________________________________________________________________________________________________

20.24.1

Callback and message timers now use etl::timer_semaphore_t instead of etl::atomic_uint_least16_t

Fixed send_message function signatures to remove compiler warnings.

________________________________________________________________________________________________

20.24.0

#503 Algorithm transform uses expensive post increment operator - Fixed for all occurrences of iterator increment.

#504 ETL_CONSTANT vs const in binary.h - Fixed.

Many algorithms will leverage built-ins, if available. Dependant on compiler version.

Added detection or selection of built-ins.

Much of etl::string and etl::string_view can be constexpr.

Added ETL initializer_list implementations that are compatible with major compilers.

Added etl::construct_at support.

Added etl::byte

Re-implemented etl::singleton

________________________________________________________________________________________________

20.23.0

Recoded state_chart to reduce its resource requirements.

Added compile time state chart variants.

Added etl::unaligned_type for fundamental types.

Added reverse engineered functionality from C++20 <bit>.

Added all permutations of leading/trailing bit tests.

Changed inline functions to templates in binary.h.

Added etl::midpoint and etl::lerp

Recoded etl::endian & etl::endianness to allow constexpr in certain configurations.

Updates and fixes to etl::bitset. Added to_ulong, to_ullong, to_string member functions.

Moved void_t definition.

Renamed 8bit check macro.

Updated tests to support C++20 STL.

Modified C++ language level detection.

Added all permutations of leading/trailing bit tests.

etl::iterator is more SFINAE compatible.

Updated C++ standard detection.

________________________________________________________________________________________________

20.22.0

Split callback and message timer to atomic and locked interrupt versions. No use of macros required.

C++03 compatible etl::delegate.

#480 Fixed: Double formatting with precision > 9

#481 Fixed: etl::span const data cannot be created from non const c array of data.

#482 Fixed: Two or more etl::span/array_view of different types create ambiguous overloading set

#483 Fixed: Added Green Hills compiler to minmax push and pop.

#484 Fixed: etl::vector test_uninitialized_resize_excess not calling uninitialized_resize.

#485 Fixed: etl::message_packet takes message types that are not in its list.

________________________________________________________________________________________________

20.21.0

Added contains() method to etl::map and etl::set + variants.

Added support for transparent comparators.

When ETL_NO_ATOMICS is defined the timer.h file does not define timer_semaphore_t.

etl::deque::resize throws etl::deque_full instead of etl::deque_out_of_bounds, if requested size is too large.

________________________________________________________________________________________________

20.20.0

Updated container insert and erase to C++11 style const_iterator parameters. (#463)

Fixed container template function overload ambiguity. (#466)

Harmonize copy ctor and assignment for etl::delegate. (#465)

Added constexpr support for etl::enum_type. (#462)

Added 'make' functions to construct containers.

Remove unnecessary casts that causes warnings. (#461)

Added non-const string pointer overload. (#449)

Changed != to < in etl::ipool to get rid of erroneous clang-tidy nullptr dereference warning. (#457)

Added ifdef guard for MSVC pragma (#455)

________________________________________________________________________________________________

20.19.0

Updates to etl::delegate. Added more constexpr and set() functions.

Removed conanfile.py. Now controlled by conan repository.

Fixed missing typename keyword in etl::multi_span.

Added missing explicit initialisation from in_place structures.

Fixed hidden parameter warning in unordered_map, unordered_multimap, unordered_set, unordered_multiset.

Disable etl::begin(), etl::end() and etl::size() for STL & >= C++11.

Added available_bytes to byte_stream_reader & byte_stream_writer.

Meson tests & style fix #447.

Fixed constexpr accepts() implementation to be C++11 compliant (#451, #452)

Fixed compiler error msvc 16 #454

________________________________________________________________________________________________

20.18.1

Added missing read() member functions in byte_stream_reader

Updated sanity checks for etl::multi_span

________________________________________________________________________________________________

20.18.0

Added front() access to locked queues.

Added .clang-format rules.

Added etl::pool_ext and etl::generic_pool_ext.

Added etl::multi_span.

Added CMSIS RTOS2 mutex variant.

Added 'unchecked' read and write members functions to byte_stream_reader and byte_stream_writer.

Fixed byte_stream_reader to be able to use const buffers.

Removed compiler warning messages.

Fixed missing public access for etl::message_router_registry iterator.

________________________________________________________________________________________________

20.17.3

Modified etl::cyclic_value for ARMCC v5 compatibility

________________________________________________________________________________________________

20.17.2

Replaced std::size_t with size_t in utility.h

________________________________________________________________________________________________

20.17.1

Added missing functionality from last commit

Added successor handling for accepts()

Added successor handling for templated receive()

Added successor handling for pre-C++17 message router

________________________________________________________________________________________________

20.17.0

Added etl::result type

Added etl::byte_stream

Added denominated etl::to_string overloads

Added etl::remove_cvref to type traits

Replaced etl::remove_reference_t with etl::remove_cvref_t in variadic etl::variant

Added call_if and call_or member functions to etl::delegate

Improved compliance with MISRA rules

Extended successor handling for all derived message router types

________________________________________________________________________________________________

20.16.2

Fixed incomplete template specialisations in type_traits.h for C++11

________________________________________________________________________________________________

20.16.1

Fix for etl::mutex::try_lock() for GCC

________________________________________________________________________________________________

20.16.0

Added C++17 variadic versions of etl::message_router and etl::fsm

pop_into in queue and stack will move if possible.

Added Force C++03 option to Github CI

Expanded compiled variants for scripts

________________________________________________________________________________________________

20.15.1

Fixed etl::fsm C++03 template definition that was corrupted in 20.10.0

Fixed meson.build

________________________________________________________________________________________________

20.15.0

Added a Bipartite buffer, by Benedek Kupper.

etl::bip_buffer_spsc_atomic

notify_observers() takes universal reference for C++11 and above.

Updated type traits generator.

________________________________________________________________________________________________

20.14.1

Changed std::forward to etl::forward in etl::variant (variadic)

________________________________________________________________________________________________

20.14.0

Added a vaiadic version of etl::variant. Usable for C++11 and up.

Added etl::overload pattern class. Groups lambdas into a functor class.

Refactored type_traits.h. Uses STL, compiler built-ins or user defined specialisations, dependent on settings.

Added etl::conditional_t to type_traits.h

Added etl::conjunction and etl::disjunction to type_traits.h

Added etl::integer_sequence to utility.h

Added etl::in_place, etl::in_place_t and etl::in_place_index_t.

Fixed missing etl::alignment_of specialisation for const void.

________________________________________________________________________________________________

20.13.0

Added a specialisation of etl::delegate_service to allow constexpr service.

________________________________________________________________________________________________

20.12.0

Added the option to derived etl::message<> from a parent class other than etl::imessage.

The parent class must ultimately be derived from etl::imessage.

________________________________________________________________________________________________

20.11.5

Added Arduino examples.

________________________________________________________________________________________________

20.11.4

Fixed etl::circular_buffer copy and move assignment bug where the destination

buffer was not cleared before assignment.

________________________________________________________________________________________________

20.12.0

Added the option to derived etl::message<> from a parent class other than etl::imessage.

The parent class must ultimately be derived from etl::imessage.

________________________________________________________________________________________________

20.11.5

Added Arduino examples.

________________________________________________________________________________________________

20.11.4

Fixed etl::circular_buffer copy and move assignment bug where the destination

buffer was not cleared before assignment.

________________________________________________________________________________________________

20.11.3

Define missing macro when cross compiling with clang for AVR.

WCHAR_MIN is not defined when cross compiling with clang for AVR

________________________________________________________________________________________________

20.11.2

etl::basic_string::copy is now const and does not affect truncation flags.

________________________________________________________________________________________________

20.11.1

Fixed ambiguous function call in etl::mem_cast for clang.

________________________________________________________________________________________________

20.11.0

Added etl::mem_cast, etl::mem_cast_ptr & etl::mem_cast_types as a convenience

wrapper around a raw memory block.

Changed etl::debounce state tables to be defined as constexpr.

________________________________________________________________________________________________

20.10.6

Updated QueuedMessageRouter and QueuedFSM examples to use current message

frameworks.

________________________________________________________________________________________________

20.10.5

Added container_type to etl::stack, etl::queue and etl::priority_queue.

________________________________________________________________________________________________

20.10.4

Fixed cross compiler compatibility for etl::circular_buffer.

________________________________________________________________________________________________

20.10.3

Fixed etl::fsm generator for non-default number of message types.

________________________________________________________________________________________________

20.10.2

Fixed misspelled sparse histogram class.

________________________________________________________________________________________________

20.10.1

Fixed incorrect histogram end() and cend() return values.

________________________________________________________________________________________________

20.10.0

Added Hierarchical Finite State Machine (etl::hfsm) derived from etl::fsm

________________________________________________________________________________________________

20.9.3

Fixed misspelt DBL_MAX macro.

________________________________________________________________________________________________

20.9.2

Fixed ETL_ASSERT for non-class types in etl::pool.

________________________________________________________________________________________________

20.9.1

Replaced std::distance with etl::distance in erase() and erase_if() for vector.h

________________________________________________________________________________________________

20.9.0

Fixed #362 etl::fsm::receive() partial override'

Fixed #363 circular_buffer operator [] takes integer rather than size_type.

Added macros for compilers that don't support HUGE_VAL.

Added etl::accumulate and etl::clamp.

Added maths algorithms and functors.

etl::correlation

etl::covariance

etl::gamma_encode

etl:;gamma_decode

etl::histogram

etl::sparce_histogram

etl::mean

etl::invert

etl::threshold

etl::quantize

etl::limiter

etl::rescale

etl::rms

etl::standard_deviation

etl::variance

________________________________________________________________________________________________

20.8.0

Added more CRCs, generalised table creation.

Options for table sizes of 4, 16 and 256.

Removed unnecessary non-const versions of iterators for containers.

________________________________________________________________________________________________

20.7.0

Added etl::selection_sort.

etl::delegate accepts moveable parameters.

Fixed the return type of const iterators for containers from const_iterator to iterator.

Changed many instances of static const to static ETL_CONSTANT.

________________________________________________________________________________________________

20.6.3

C++98/03 compatibility fixes.

Added 'sanity check' tests for checking for 98/03/11/14/17 issues.

________________________________________________________________________________________________

20.6.1

Added missing etl::atomic<bool> from gcc & clang implementations.

Changed nullptr to ETL_NULLPTR in buffer_descriptors and multi_range.

Fixed header includes in state_chart.h

________________________________________________________________________________________________

20.6.0

Added etl::message_router_registry.

Changed etl::flat_multimap & etl::flat_multiset to iterate in insertion order, as per C++11 map and set.

Added ETL_CONSTEXPR to etl::array.

C++98 compatibility fixes.

Remove unnecessary template keyword to destroy() call in etl::pool.

Abstracted unit test framework header.

________________________________________________________________________________________________

20.5.2

Fixed template aliases when using STL and below C++14

________________________________________________________________________________________________

20.5.1

Fixed ambiguous template error for etl::extent.

________________________________________________________________________________________________

20.5.0

Added specialisation of etl::state_chart to allow a parameter to be passed along

with the event.

Issue #339 - Fix extent type conversion warning

Issue #340 - Export headers as system includes

________________________________________________________________________________________________

20.4.0

Added uninitialized_resize() to etl::vector and etl::basic_string.

________________________________________________________________________________________________

20.3.1

Added ETL_CONSTANT to numeric_limits member functions.

________________________________________________________________________________________________

20.3.0

Added initialize_free_space(), trim_to_terminator() and data_end() functions to

strings for easier integration with C APIs.

________________________________________________________________________________________________

20.2.3

Fixed indexing error in find_next() for etl::bitset.

________________________________________________________________________________________________

20.2.2

Added non-const get_message() member functions in shared message framework.

________________________________________________________________________________________________

20.2.1

Modified reference_counted_message_pool::allocate() return type.

Changed from etl::ireference_counted_message* to etl::reference_counted_message<TMessage, TCounter>*

________________________________________________________________________________________________

20.2.0

Allow default constructed messages for shared messages.

________________________________________________________________________________________________

20.1.0

Changed template aliases so they are available for C++11 rather than C++14.

________________________________________________________________________________________________

20.0.0

Removed source etl::imessage_router& parameter from the message framework receive

and on_receive member functions.

________________________________________________________________________________________________

19.5.3

Added move constructor and move assignment operator to etl::shared_message.

________________________________________________________________________________________________

19.5.2

Fixed rollover error for etl::queue_spsc_atomic.

Added required_alignment parameter to allocate for etl::imemory_block_allocator.

Updated QueuedMessageRouter example.

________________________________________________________________________________________________

19.5.1

Exclude integral types from being considered for iterator range container constructors.

________________________________________________________________________________________________

19.5.0

Added shared messages to the messaging framework + supporting allocator classes.

Some refactoring of the messaging framework internals.

Added example application for shared messages.

Added a lockable queue with locks implemented as pure virtuals.

Refactored the other queues.

Fixed missing virtual destructor for C++11 observer.

Added etl::successor class for consistent 'chain of responsibility' pattern generation.

Added missing constructors to unique_ptr.

Added nullptr check to unique_ptr destructor.

Fixed VS2019 warning for etl::deque iterators.

Added a virtual on_task_added callback to the scheduler.

Added a runtime multi range nested loop class.

Added etl::for_each.

Added is_random_access_iterator and deprecated is_random_iterator.

Added VS2019 Delegate function interrupt service example.

________________________________________________________________________________________________

19.4.3

Added nullptr check to unique_ptr destructor.

________________________________________________________________________________________________

19.4.2

Fixed VS2019 warning for etl::deque iterators.

________________________________________________________________________________________________

19.4.1

Added constructors with deleters for unique_ptr.

________________________________________________________________________________________________

19.4.0

Added virtual function void on_task_added() that is called when a task is added to a scheduler.

________________________________________________________________________________________________

19.3.7

Fix some container iterator assignment operators to return a reference, rather than value.

Fix non-const etl::frame_check_sequence functions are const in all derived classes.

Make value getter functions const in etl::frame_check_sequence.

________________________________________________________________________________________________

19.3.6

Arduino compatibility mods.

________________________________________________________________________________________________

19.3.5

Change std::move to etl::move in etl::forward_list

________________________________________________________________________________________________

19.3.4

Make etl::span std compliant

Added missing overloads for span::first + span::last

________________________________________________________________________________________________

19.3.3

Added check for existance of <new> in platform.h

Added placement_new.h which selects between <new> and ETL definitions.

________________________________________________________________________________________________

19.3.2

Added No-STL clang mutex that uses GCC implementation.

________________________________________________________________________________________________

19.3.1

Fixed etl::format_spec constexpr compatibility with C++11.

Fixed etl::bit_stream reading too many bits when reading floating point values.

________________________________________________________________________________________________

19.3.0

More constexpr, template aliases and inline variables.

Added ETL_ASSERT for out-of-order state list.

________________________________________________________________________________________________

19.2.1

Fixed version number retrieval from Github.

________________________________________________________________________________________________

19.2.0

Security flag for a string is copied on assignment or copy constructor.

etl::format_spec may now be a constexpr.

Maths constants now constexpr (C++11 or above)

Added AVR check to nullptr.h

________________________________________________________________________________________________

19.1.0

Refactor of etl::buffer_descriptors interface.

________________________________________________________________________________________________

19.0.0

Containers with external buffers or pools are now separate classes instead of specialisations.

etl::circular_buffer<T, 0> => etl::circular_buffer_ext<T>

etl::forward_list<T, 0> => etl::forward_list_ext<T>

etl::list<T, 0> => etl::list_ext<T>

etl::string<0> => etl::string_ext

etl::wstring<0> => etl::wstring_ext

etl::u16string<0> => etl::u16string_ext

etl::u32string<0> => etl::u32string_ext

etl::vector<T, 0> => etl::vector_ext<T>

________________________________________________________________________________________________

18.20.2

Fixed etl::to_string for floating point numbers between 0 & -1.0

________________________________________________________________________________________________

18.20.1

Resolved issue with zero length literals for etl::make_string (again!)

Remove redundant test support code.

Disabled ASAN option in Visual Studio project.

________________________________________________________________________________________________

18.20.0

Added etl::buffer_descriptors.

Added std/etl pair conversions.

Added etl::make_string_view.

Resolved issue with zero length literals for etl::make_string

Resolved etl::flags constexpr issues.

Added atomics for clang.

Resolved type_traits issues for GCC < v5

________________________________________________________________________________________________

18.19.3

Addressed ARMCC v5 C++11 issues

________________________________________________________________________________________________

18.19.2

Expanded the use of constexpr in etl::flags

________________________________________________________________________________________________

18.19.1

Added ETL_CONSTEXPR for state_chart, transision and state constructors.

Eliminate ARM compiler v5 warnings for state_chart.

Fixed return type error for atomic GCC.

________________________________________________________________________________________________

18.19.0

Modified strings for better memory efficiency. String truncation detection and clear-after-use can be disabled.

Added ETL_DISABLE_STRING_TRUNCATION_CHECKS macro check in platform.h.

Added ETL_DISABLE_STRING_CLEAR_AFTER_USE macro check in platform.h.

Added etl::flags to wrap boolean flag functionality.

Four parameter equal() algorithm variant added.

Modified is_pod definition when using the STL.

Added are_all_same trait.

________________________________________________________________________________________________

18.18.2

Change to array_view member variable declaration, for constructor from array.

________________________________________________________________________________________________

18.18.1

Added [] operators to etl::circular_buffer

________________________________________________________________________________________________

18.18.0

Added etl::circular_buffer

________________________________________________________________________________________________

18.17.2

Added missing emplace functions from vector-of-pointers specialisation

________________________________________________________________________________________________

18.17.1

Fixed incorrect reflected CRC8 0x07 lookup table

________________________________________________________________________________________________

18.17.0

Added iterator API to all etl::frame_check_sequence based template classes, such as CRCs and checksums.

Example:

std::string data("123456789");

etl::crc32 crc;

std::copy(data.begin(), data.end(), crc.input());

uint32_t value = crc.value();

________________________________________________________________________________________________

18.16.5

Add missing include in test etl_profile.h

________________________________________________________________________________________________

18.16.4

Reduced warnings from cppcheck v2.2

________________________________________________________________________________________________

18.16.3

Added VS2019 to CI configuration file.

Created separate VS2019, GCC and clang configuration files.

________________________________________________________________________________________________

18.16.2

Updates to CI configuration files to compile 'No STL' variants of the tests.

________________________________________________________________________________________________

18.16.1

Updates to CI configuration files.

________________________________________________________________________________________________

18.16.0

C++17 Template deduction guides added for :-

deque

map

multimap

set

multiset

flat_map

flat_multimap

flat_set

flat_multiset

unordered_map

unordered_multimap

unordered_set

unordered_multiset

forward_list

list

span

indirect_vector

vector

pair

optional

Note: All container types require that a constructor take a std::initializer_list exist, and as such, may only be

used when the STL is also used in the application.

__________________________________________________________________________________________________

18.15.5

Refactored empty(), full(), available() member functions for etl::list and etl::forward_list

__________________________________________________________________________________________________

18.15.4

etl::fsm now reports itself correctly as a consumer of messages.

Fixed inifinite loop for default constructed etl::string_view to get_token().

etl::error_handler is not compiled unless error logging is enabled.

Performance optimisations for etl::rotate, etl::move & etl::move_backward.

__________________________________________________________________________________________________

18.15.3

etl::array_view constructor from C array is no longer explicit.

__________________________________________________________________________________________________

18.15.2

Workaround for Segger ARM Link-Time-Optimisation (LTO) bug.

etl::array_view constructor from etl or std array is no longer explicit.

__________________________________________________________________________________________________

18.15.1

Refactoring of 18.15.0.

Modified constructor syntax.

__________________________________________________________________________________________________

18.15.0

Allow strings with external buffers to use a pre-initialised buffer.

__________________________________________________________________________________________________

18.14.1

Fixed conditional compilation macro use for template deduction guides.

__________________________________________________________________________________________________

18.14.0

Added template deduction guides for array and array_view

__________________________________________________________________________________________________

18.13.0

Added a line coordinate generator using the Bresenham algorithm.

The API is similar to a container.

__________________________________________________________________________________________________

18.12.7

Made etl::reference_wrapper API closer to the STL version. Does not support invocation of a callable object.

___________________________________________________________________________________________________

18.12.6

Fixed etl::stack top level assignment operator not clearing before copy.

___________________________________________________________________________________________________

18.12.5

Fixed issue for incorrect operation of erase(const_iterator, const_iterator) when

the terminating iterator was end() for etl::unordered_map, etl::unordered_multimap,

etl::unordered_set and etl::unordered_multiset.

___________________________________________________________________________________________________

18.12.4

Resolve clang 9 compatibility issues.

___________________________________________________________________________________________________

18.12.3

Resolve 0U constant ambiguity in string utility tests

___________________________________________________________________________________________________

18.12.2

Deleted unused file.

Updated CMakeLists.txt

___________________________________________________________________________________________________

18.12.1

Fixed compiler compatibility issues in etl::forward_list and etl::list

___________________________________________________________________________________________________

18.12.0

Recoded string utility get_token()

clang 9 compatibility changes

___________________________________________________________________________________________________

18.11.1

Fix and optimise etl::list and etl::forward_list move constructors and assignment operators.

___________________________________________________________________________________________________

18.11.0

Added etl::ibitset::span() member functions to return a span of the underlying binary data.

___________________________________________________________________________________________________

18.10.0

Fixed pointer vector move operators.

Optimised constructors and assignments for pointer vectors.

___________________________________________________________________________________________________

18.9.0

Added enable/disable observer interface to observable class.

___________________________________________________________________________________________________

18.8.0

Re-coded string utilities to allow any string-like container to use it.

___________________________________________________________________________________________________

18.7.1

Removed to_upper_case, to_lower_case & to_sentence_case from

wstring_utilities, u16string_utilities & u32string_utilities

___________________________________________________________________________________________________

18.7.0

String utilities added.

Fixed C++03 compatibility issue in error_handler.h

___________________________________________________________________________________________________

18.6.0

Added stream manipulators

___________________________________________________________________________________________________

18.5.0

Added string streams

etl::string_stream

etl::wstring_stream

etl::u16string_stream

etl::u32string_stream

Added string formatting to etl::to_string from

etl::string etl::string_view

etl::wstring etl::wstring_view

etl::u16string etl::u16string_view

etl::u32string etl::u32string_view

___________________________________________________________________________________________________

18.4.0

Added:

etl::string_steam, etl::wstring_stream, etl::u16string_stream and etl::u32string_stream

Updated etl::format_spec, etl::wformat_spec, etl::u16format_spec and etl::u32format_spec to support string

stream features.

Note: The default for uppercase for the format spec is now false, for compatibility with the STL defaults.

The string streams supply versions of most of the common STL IO manipulators.

Strings are now formatted by to_string().

___________________________________________________________________________________________________

18.4.0

Refactored etl::error_handler to use etl::delegate style implementation.

Allows set_callback() function to be given run-time and compile-time pointers to free and member functions

without using etl::ifunction.

___________________________________________________________________________________________________

18.3.4

Changed std::move to etl::move in std::optional and std::queue

Fixed etl::span subspan with etl::dynamic_extent

___________________________________________________________________________________________________

18.3.3

C++03 compatibility fix for type_traits.h

___________________________________________________________________________________________________

18.3.2

C++03 compatibility fix for pool.h

___________________________________________________________________________________________________

18.3.1

C++03 compatibility fix for type_traits.h

___________________________________________________________________________________________________

18.3.0

Added etl::parameter_pack to easily extract information about the types in a

template parameter pack.

___________________________________________________________________________________________________

18.2.0

Variadic versions of etl::type_id_lookup and etl::type_type_lookup for C++11 and above.

___________________________________________________________________________________________________

18.1.3

Added CircleCI yml file for master branch

___________________________________________________________________________________________________

18.1.2

Fixed undefined behaviour warning for #define that contained 'define'.

Restored CMakeLists.txt to root directory.

___________________________________________________________________________________________________

18.1.1

Fixed bug for when merging a list to itself for etl::list, etl::intrusive_list & etl::intrusive_forward_list.

___________________________________________________________________________________________________

18.1.0

Strings may use external buffers if the 'max size' template parameter is zero.

___________________________________________________________________________________________________

18.0.1

Fixed 'insert to empty container' bug in etl::deque.

___________________________________________________________________________________________________

18.0.0

*************************

** API Breaking Change

Removed template typename requirement for allocate and create in etl::pool

*************************

Small internal updates to state_chart

Updates to static and runtime asserts in binary.h

Added a default constructor for etl::io_port_wos

Removed deleted constructors and assignment operator for etl::null_type

Added casts to etl::smallest_int_for_value

Added constexpr in place of enum for C++11 in sqrt.h

Replaced typedef typename etl::remove_cv<T>::type type_t with typedef typename

etl::remove_reference<typename etl::remove_cv<T>::type>::type type_t in type_traits.h

Removed Windows Unicode dependency in CMakeLists.txt

Added test_log_1000_base test

Updated how Conan gets the library version

___________________________________________________________________________________________________

17.8.3

Modified etl::delegate for better lambda support.

Added etl::is_class to type_traits.h

Added missing return statement in etl::move_iterator in operator =

Added support for compilers that do not support LDBL_xxx macros

___________________________________________________________________________________________________

17.8.2

Added check for NAN, nan(), nanf() or nanl() support.

___________________________________________________________________________________________________

17.8.1

Added determine_development_os.h to platform.h to attempt to automatically deduce the OS that the developer is

using.

Added subsequent changes to unit test's etl_profile.h

Removed CMakeLists.txt that auto selected profiles header (this should be done in the project's etl_profile.h)

Removed profiles/etl_profile.h

Added missing tests to unit test's CMakelists.txt

Changed the wording on the website to indicate that the supplied profiles in the ETL are to be seen as examples

only.

____________________________________________________________________________________________________

17.8.0

Added is_producer() and is_consumer() to the message router interface.

Deprecated is_null_router()

Added more ETL macros for C++ attributes.

____________________________________________________________________________________________________

17.7.0

Added etl::message_producer type.

____________________________________________________________________________________________________

17.6.0

etl::array_view is non-mutable by default.

Mutable functionality is enabled by defining ETL_ARRAY_VIEW_IS_MUTABLE

____________________________________________________________________________________________________

17.5.0

Modified etl::message_packet to allow default construction, copy/move construction

and copy/move assignment.

____________________________________________________________________________________________________

17.4.3

Changed local 'work' variables from uint_least8_t to uint32_t to avoid possible overflow.

Fixed misspelt scheduler policies. Typedef'd old names for backwards compatibility.

____________________________________________________________________________________________________

17.4.2

Make etl::span::subspan functions compatible with C++11 constexpr

____________________________________________________________________________________________________

17.4.1

Removed double definition of default case in switch.

____________________________________________________________________________________________________

17.4.0

Added etl::span

____________________________________________________________________________________________________

17.3.0

Added move_iterator wrapper class.

____________________________________________________________________________________________________

17.2.0

Added move API to unordered map and set containers.

____________________________________________________________________________________________________

17.1.2

Created scheduler example project.

____________________________________________________________________________________________________

17.1.1

Created CMakeLists.txt files for QueuedFSM and QueuedMessageRouter example projects.

____________________________________________________________________________________________________

17.1.0

Removed ETL's implementation of nullptr for pre C++11 compilers and created the macro

ETL_NULLPTR for internal use. Equates to NULL or nullptr, dependent on the compiler

version and project profile.

Added partial compile time versions of binary_fill and has_zero_byte.

____________________________________________________________________________________________________

17.0.0

Recoded binary_fill, has_zero_byte and has_byte_n as runtime functions to fix

compiler compatibilty issues. All functions may be constexpr if the compiler supports it.

Added tests for binary constextr functions.

Added option to define ETL_NO_64BIT_TYPES macro if the compiler does not support 64bit types.

Conditional compilation macros added to affected files.

Added iterator copy constructors to etl::deque.

Added code for ARM5 compiler compatibility in limits.h

Simplified conditional compilation for nullptr definition.

Changes to assign() in etl::string_view for compiler compatibility

Changes to container iterators for compiler compatibility.

____________________________________________________________________________________________________

16.8.1

Fixed C++03 compatibility issues nullptr.h, binary.h & string_view.h

Fixed warning

____________________________________________________________________________________________________

16.8.0

Extracted message_packet from etl::message_router for use as an independant class.

____________________________________________________________________________________________________

16.7.1

Fix C++03 compatibility issues in memory.h and utility.h

____________________________________________________________________________________________________

16.7.0

Updates to make unique_ptr similar to std::unique_ptr

Fixed unique_ptr swap() compilation issue

Added mutex for FreeRTOS

____________________________________________________________________________________________________

16.6.1

etl::exchange modified for better C++03 compatibility

____________________________________________________________________________________________________

16.6.0

rvalue reference support for heap functions and etl::priority_queue

____________________________________________________________________________________________________

16.5.3

type_traits.h is_one_of fix for C++03

____________________________________________________________________________________________________

16.5.2

Modified nullptr.h for better cross compiler compatibility

Removed redundant includes for etl::array

____________________________________________________________________________________________________

16.5.1

Removed redundant include

Moved move_s definitions to avoid forward declaration

____________________________________________________________________________________________________

16.5.0

has_value() added to etl::optional

____________________________________________________________________________________________________

16.4.4

Added #if ETL_CPP11_SUPPORTED around etl::is_rvalue_reference

____________________________________________________________________________________________________

16.4.3

Rearranged where etl::swap is defined to fix issues with certain compilers

Fixed most warnings for CLang

____________________________________________________________________________________________________

16.4.2

Fix etl::pair error and warning.

____________________________________________________________________________________________________

16.4.1

Moved icache.h to 'experimental' folder.

Removed atomic.h from 'experimental' folder.

____________________________________________________________________________________________________

16.4.0

Added rvalue references and 'move' API to all containers, except etl::priority_queue

and etl::variant

____________________________________________________________________________________________________

16.3.0

Added parity checksum to checksum.h.

____________________________________________________________________________________________________

16.2.1

Updated QueuedMessageHandler example

____________________________________________________________________________________________________

16.2.0

Added etl::heap_sort to algorithms.

____________________________________________________________________________________________________

16.1.0

Added compile time option to make string truncation an error.

Define ETL_STRING_TRUNCATION_IS_ERROR to enable.

____________________________________________________________________________________________________

16.0.0

Refactored the ETL's relationship with the STL

Many reverse engineered STL algorithms and traits are now available through the

ETL namespace.

When ETL_NO_STL is defined, the ETL implements its own versions of the STL code.

When ETL_NO_STL is *not* defined, the ETL act as a wrapper around the STL implementations.

____________________________________________________________________________________________________

15.5.0

Added the ability to self determine the compiler type, version and language support

by defining ETL_AUTO_DETERMINE_COMPILER_INFO or including the 'auto.h' profile.

Added support for C++11's 'alignas' and 'alignof'

Changed 'memcpy' to 'memmove' in alternate STL algorithms.

____________________________________________________________________________________________________

15.4.2

Fix visitor overridden test virtual visit function parameters

Reduced warnings in unit tests for CLang

Updated type_traits_generator

Added explicit construction from string_view

____________________________________________________________________________________________________

15.4.1

Move ETL_NODISCARD definition to ETL_CPP17_SUPPORTED test

____________________________________________________________________________________________________

15.4.0

Refactored CRC classes for better code sharing and reduced resource requirements

Added new CRC definitions

____________________________________________________________________________________________________

15.3.1

Changes to alternate STL limits.h for ARM5 compiler compatibility

____________________________________________________________________________________________________

15.3.0

Added etl::make_string_with_capacity

____________________________________________________________________________________________________

15.2.1

Compile time optimisations to etl::make_string

____________________________________________________________________________________________________

15.2.0

Added function adaptors and removed built-in sort functions from indirect_vector.

Added etl::make_string for all string types.

____________________________________________________________________________________________________

15.1.0

Fixes to the conditional compilation of choose_tag_types.h and

choose_pair_types.h to take into account ETL_NO_STL.

____________________________________________________________________________________________________

15.0.0

Unit tests and library code updated so that the ETL may be compiled and tested

with and without STL support.

____________________________________________________________________________________________________

14.38.2

Added alternate 'No STL' reverse_iterator unit tests.

Fixed missing equality operator for reverse_iterator.

____________________________________________________________________________________________________

14.38.1

Added missing C++11 specific conditional compilation in callback_timer.h

____________________________________________________________________________________________________

14.38.0

Added optional to force string and string_view construction from character

pointers to be explicit.

____________________________________________________________________________________________________

14.37.2

Added assert.h include to memory.h

____________________________________________________________________________________________________

14.37.1

Fix to the return value of alternate STL 'copy'

Added delegate option to callback_timer

____________________________________________________________________________________________________

14.37.0

Added etl::indirect_vector

____________________________________________________________________________________________________

14.36.0

Added wchar_t, u16 and u32 version of the 'set from string' function.

____________________________________________________________________________________________________

14.35.5

Bug fix for etl::multiset & etl::multimap erase.

____________________________________________________________________________________________________

14.35.4

Bug fix for etl::set & etl::map lower_bound.

____________________________________________________________________________________________________

14.35.3

Added assert when calling uninitialised delegate.

____________________________________________________________________________________________________

14.35.2

Fixed incorrect result when rounding up to integral part.

____________________________________________________________________________________________________

14.35.1

Fixed incorrect result for negative float to string.

____________________________________________________________________________________________________

14.35.0

Changed namespace for alternate ETL's STL support.

____________________________________________________________________________________________________

14.34.1

Fixed strict aliasing bug for -O3 optimisation in etl::pool

____________________________________________________________________________________________________

14.34.0

Fix alternate STL utility.h for ARM6

Added ARM7 profiles.

____________________________________________________________________________________________________

14.33.0

Updated unit tests to C++17

____________________________________________________________________________________________________

14.32.0

Added Platform IO example

____________________________________________________________________________________________________

14.31.2

More PIO json tweaks

____________________________________________________________________________________________________

14.31.1

Fix error in PIO json

____________________________________________________________________________________________________

14.31.0

Removed C timer library

____________________________________________________________________________________________________

14.30.0

Allow conan's etl version metadata to automatically update via git tags

____________________________________________________________________________________________________

14.29.4

Fixed unordered_map iterator operator* return type

____________________________________________________________________________________________________

14.29.3

Minor updatess for etl::delegate

____________________________________________________________________________________________________

14.29.2

Fixed incorrect results returned from pointers for atomic_gcc_sync

____________________________________________________________________________________________________

14.29.1

Added #include "stl/utility.h" to etl::optional

____________________________________________________________________________________________________

14.29.0

Added const parameters and ETL_CONST_EXPR to etl::array_view

____________________________________________________________________________________________________

14.28.3

Removed redundant etl::const_array_view

____________________________________________________________________________________________________

14.28.2

Various fixes.

void assign(const_pointer, size_t) did not set the truncation flag.

Fixed resize(0) error for etl::forward_list

Removed erroneous pointers in etl::unordered_map::begin()

____________________________________________________________________________________________________

14.28.1

Optimisation of floating point specialisations of etl::cumulative_moving_average.

____________________________________________________________________________________________________

14.28.0

Added runtime sample size specialisations to etl::cumulative_moving_average.

____________________________________________________________________________________________________

14.27.1

Removed ETL_IF_CONSTEXPR from etl::message_timer 'tick()'

____________________________________________________________________________________________________

14.27.0

ETL's random number generators are now non-polymorphic by default.

Define ETL_POLYMORPHIC_RANDOM to enable previous functionality.

____________________________________________________________________________________________________

14.26.8

Moved global operators to ETL namespace.

____________________________________________________________________________________________________

14.26.7

Compatibility changes for GCC v5.4.

____________________________________________________________________________________________________

14.26.6

Added variadic parameters to observer notification.

____________________________________________________________________________________________________

14.26.5

Fixed misplaced semicolon in error_handler.h

____________________________________________________________________________________________________

14.26.4

FSM test example fix.

____________________________________________________________________________________________________

14.26.3

A few small optimisations to binary.h

____________________________________________________________________________________________________

14.26.2

Added #include <new> to files using 'placement new'.

____________________________________________________________________________________________________

14.26.1

Simplified 'to_string' templates.

____________________________________________________________________________________________________

14.26.0

Simplified message framework internal code.

Additional receive() virtual function overload taking destination id.

Removed is_bus() member function.

____________________________________________________________________________________________________

14.25.0

Added variadic template versions of etl::largest, etl::largest_type,

etl::largest_alignment and etl::smallest

____________________________________________________________________________________________________

14.24.2

Fixed bug in 'vector of pointers' move constructor.

____________________________________________________________________________________________________

14.24.1

Added compile time functor version of 'create()'.

____________________________________________________________________________________________________

14.24.0

Added 'delegate' and 'delegate_service'.

____________________________________________________________________________________________________

14.23.1

Added missing 'cleanup' to string's resize() method.

____________________________________________________________________________________________________

14.23.0

Added an optional secure mode to strings so that unused space will be cleared to zero

and also cleared on destruction.

____________________________________________________________________________________________________

14.22.1

Modified memory functions so that they will not be optimised away.

____________________________________________________________________________________________________

14.22.0

Added etl::memory_clear and etl::memory_set utility functions.

These functions will overwrite the memory allocated to the supplied object.

____________________________________________________________________________________________________

14.21.0

Added variadic min and max functions.

etl::multimin

etl::multimin_compare

etl::multimin_iter

etl::multimin_iter_compare

etl::multimax

etl::multimax_compare

etl::multimax_iter

etl::multimax_iter_compare

C++11 only.

____________________________________________________________________________________________________

14.20.0

Added etl::multi_array for multi-dimensional arrays.

C++11 only.

____________________________________________________________________________________________________

14.19.0

Added 'emplace' to etl::optional.

C++03 & C++11 variants supplied depending on compiler support.

____________________________________________________________________________________________________

14.18.4

Fixed bug in fractional part for floating point with leading zeros after the decimal point.

____________________________________________________________________________________________________

14.18.3

Unified 'to string' API.

____________________________________________________________________________________________________

14.18.2

Finalised 'to string'.

____________________________________________________________________________________________________

14.18.1

Changed etl::format_sepc template to etl::basic_firmat_spec.

Created individual format_spec typedefs for each string type.

____________________________________________________________________________________________________

14.18.0

Added etl::to_string, etl::to_wstring, etl::to_u16string and etl::to_u32string

plus formating support for integrals.

____________________________________________________________________________________________________

14.17.0

Added C++11 variadic templates for etl::observer.

____________________________________________________________________________________________________

14.16.0

Added C++11 variadic templates for etl::visitable and etl::visitor.

____________________________________________________________________________________________________

14.15.0

Added external buffer support for vector.

____________________________________________________________________________________________________

14.14.2

Modified 'truncated' to only be cleared on 'clear()' or 'assign()'.

Added assignment from zero terminated string pointer.

____________________________________________________________________________________________________

14.14.1

Fixed bug where 'truncated' was not always set correctly for strings.

____________________________________________________________________________________________________

14.14.0

Fixed string push_back() bug where the internal terminator was not updated.

Basic Conan package added.

Added const ref istring constructors.

Updated profiles for C++17.

____________________________________________________________________________________________________

14.13.1

Modified etl::queue_spsc_locked parameters to 'const'.

____________________________________________________________________________________________________

14.13.0

Added etl::queue_spsc_locked with injected locking functions.

____________________________________________________________________________________________________

14.12.0

Enabled emplace functions for 'No STL'.

____________________________________________________________________________________________________

14.11.3

Moved C++03 force macros to test profile.

____________________________________________________________________________________________________

14.11.2

Fix inconsistent ETL_FILE definitions.

____________________________________________________________________________________________________

14.11.1

Fix 'force C++03' macros leftover from testing.

____________________________________________________________________________________________________

14.11.0

Added rvalue reference interfaces to forward_list.

____________________________________________________________________________________________________

14.10.2

Fix for unordered_multimap, unordered_set and unordered_multiset insert and erase bug.

____________________________________________________________________________________________________

14.10.1

Fix for unordered_map insert and erase bug.

____________________________________________________________________________________________________

14.10.0

Added ETL_NOEXCEPT macros.

Added std::forward support to alternate STL utility header.

____________________________________________________________________________________________________

14.9.0

Added constexpr constructors to string_view and array_view.

____________________________________________________________________________________________________

14.8.2

Added missing #include "stl/interator.h" in frame_check_sequence.h

____________________________________________________________________________________________________

14.8.1

Fixed bug for certain inserts in etl::vector

____________________________________________________________________________________________________

14.8.0

Added etl::callback_service

Useful for abstracting the interrupt system from C++ handlers.

____________________________________________________________________________________________________

14.7.2

Added #include <new> to message_router.h for improved cross platform compatibility.

____________________________________________________________________________________________________

14.7.1

Rvalue reference C++-03/C++11 compatibility fix.

____________________________________________________________________________________________________

14.7.0

Continuing updates for adding rvalue reference API to the containers.

etl::deque

etl::list

etl::vector

____________________________________________________________________________________________________

14.6.1

Fixed bugs in etl::flat_map 'operator[]' and 'insert'.

____________________________________________________________________________________________________

14.6.0

Added etl::scaled_rounding to allow selection of rounding algorithms when

emulating fixed point arithmetic with scaled integral values.

Added etl::cumulating_moving_average, implementing an algorithm for

calculating an average for a stream of samples. There are specialisations

for floating point and scaled integral sample types.

Added C++11 rvalue reference 'push' functions for etl::deque.

____________________________________________________________________________________________________

14.5.1

Fixed deque pushes for literals.

____________________________________________________________________________________________________

14.5.0

Added move algorithms and utility to 'alternate' STL.

Added rvalue reference API to etl::deque.

____________________________________________________________________________________________________

14.4.0

Added C++03/C++11 emplace for deque, priority_queue, queues, stack, variant & vector.

____________________________________________________________________________________________________

14.3.0

etl::forward_list supports shared pools.

____________________________________________________________________________________________________

14.2.0

Added 'don't care current state' transition entry option.

____________________________________________________________________________________________________

14.1.0

Added hash based random number generator

____________________________________________________________________________________________________

14.0.0

The ETL is now 'all header'.

____________________________________________________________________________________________________

13.0.0

Added bit stream serialiser/deserialiser

____________________________________________________________________________________________________

12.1.1

Added random_pcg Permuted Congruential Generator

____________________________________________________________________________________________________

12.0.1

Modified state_chart to accept recursive events.

Made start() virtual.

____________________________________________________________________________________________________

12.0.0

Modified the API of etl::state_chart constructors.

____________________________________________________________________________________________________

11.19.0

Removed push(void) push_back(void) and push_front(void) function for containers.

____________________________________________________________________________________________________

11.18.0

Added CRC16 MODBUS

____________________________________________________________________________________________________

11.17.1

Swapped event and current state parameters for transition constructor.

____________________________________________________________________________________________________

11.17.0

Added etl::state_chart

____________________________________________________________________________________________________

11.16.6

Fixed implementations of key_comp and value_comp for maps and sets

____________________________________________________________________________________________________

11.16.5

Added 'ull' suffix to 64bit literals

____________________________________________________________________________________________________

11.16.4

Fixed nullptr compatibility for ARM5 compiler.

____________________________________________________________________________________________________

11.16.3

Fixed missing algorithms for No STL option.

Improved Keil compatibility.

____________________________________________________________________________________________________

11.15.1

io_port_test Fixed unaligned access error.

debug_count Removed typed += & -= operators and replaced with templates.

____________________________________________________________________________________________________

11.15.0

Added 'memory model' selection for queues to allow more efficient implementations.

Maximum queue sizes:

MEMORY_MODEL_SMALL 255 (254 for queue_spsc_atomic)

MEMORY_MODEL_MEDIUM 65535

MEMORY_MODEL_LARGE 2147483647

MEMORY_MODEL_HUGE 9223372036854775807

Fixed syntax errors highlighted by GCC v8

____________________________________________________________________________________________________

11.14.2

Removed reference_flat_set & reference_flat_map reliance on equality.

____________________________________________________________________________________________________

11.14.1

Removed flat_set & flat_map reliance on equality.

____________________________________________________________________________________________________

11.14.0

Added tests for limited support for self insert for strings.

Added 'wipe_on_destruct' template class for secure wiping of objects on destruction.

Updated unique_ptr API.

____________________________________________________________________________________________________

11.13.2

Protected destructor for some FSM classes.

Observer's remove_observer returns bool.

____________________________________________________________________________________________________

11.13.1

Fixed vector of pointer typedefs

____________________________________________________________________________________________________

11.13.0

Added specialisation for vector<const T*>

____________________________________________________________________________________________________

11.12.2

Remove SFINAE from array_view.

Added default etl::less compare type appropriate map and set classes.

Moved non-template code in pvoidvector to cpp file.

____________________________________________________________________________________________________

11.12.1

Made atomic load const for non STL vesions

____________________________________________________________________________________________________

11.12.0

Renamed STATIC_ASSERT to ETL_STATIC_ASSERT

Removed non-conforming std::nullptr

____________________________________________________________________________________________________

11.11.1

Compatibilty changes for Segger IDE, GCC & STLPort

____________________________________________________________________________________________________

11.11.0

Compatibilty changes for Segger IDE, GCC & STLPort

____________________________________________________________________________________________________

11.10.0

Merged CMake branch

____________________________________________________________________________________________________

11.9.2

Fixed compile error when ETL_DEBUG_COUNT is not defined.

____________________________________________________________________________________________________

11.9.1

Fix Github issue #73 (Timers)

____________________________________________________________________________________________________

11.9.0

Added CRC32-C (Castagnoli)

____________________________________________________________________________________________________

11.8.0

Added more binary utilities.

binary_fill

has_zero_byte

has_byte_n

____________________________________________________________________________________________________

11.7.0

Modified header guards.

Added etl::type_select

Added etl::null_type

____________________________________________________________________________________________________

11.6.0

Added capacity() to etl::queue

Prefixed max_size() and capacity() with ETL_CONSTEXPR in all queue types.

____________________________________________________________________________________________________

11.5.0

Added etl::permutations and etl::combinations constant templates.

____________________________________________________________________________________________________

11.4.0

Added improved atomics.

Added mutex

Added SPSC & MPPC queues

____________________________________________________________________________________________________

11.3.0

Improved compatibility with 64 bit pltforms.

____________________________________________________________________________________________________

11.2.0

Added std::initializer_list constructors to containers, if ETL_CPP11_SUPPORTED is set to 1

____________________________________________________________________________________________________

11.0.1

Added reset() to etl::optional

____________________________________________________________________________________________________

11.0.0

New directory structure.

C & CPP files in src/

H files in include/etl/

____________________________________________________________________________________________________

10.21.2

Added version.h

____________________________________________________________________________________________________

10.21.1

Removal of GCC warnings from variant.h.

____________________________________________________________________________________________________

10.21.0

Completion of operator set for etl::optional

Removal of more GCC warnings when using -Wextra.

____________________________________________________________________________________________________

10.20.0

Rewrite of debounce code to factor out commonality.

Made interrupt locks in C timer framework to match that of C++ version.

Improved etl::endianness. Added static functions.

____________________________________________________________________________________________________

10.19.2

Fixed strict aliasing warnings for endianess.

____________________________________________________________________________________________________

10.19.1

Fixed strict aliasing warnings for aligned storage.

____________________________________________________________________________________________________

10.19.0

Added 'create' and 'destroy' functions to pools.

Modified class heirarchy.

etl::generic_pool is derived from on etl::ipool.

etl::pool is derived from etl::generic_pool.

____________________________________________________________________________________________________

10.18.1

Reduced disable/enable time during function calls.

____________________________________________________________________________________________________

10.18.0

Improvements to message and callback timer frameworks.

Reduced disable/enable time during function calls.

Added the option to use either atomic semaphores or interrupt enables to control access.

____________________________________________________________________________________________________

10.17.0

Added emplace functions to etl::variant.

____________________________________________________________________________________________________

10.16.1

Improved performance of emplace for value_type parameters.

____________________________________________________________________________________________________

10.16.0

Added emplace member functions to flat_map, flat_multimap, flat_set and flat_multiset

____________________________________________________________________________________________________

10.15.0

Added protected destructors to FSM & message_timer and code to message router packet destructor to choose

correct method of destruction.

____________________________________________________________________________________________________

10.14.0

Added variant_pool generator.

____________________________________________________________________________________________________

10.13.0

There was no version 10.13.0

____________________________________________________________________________________________________

10.12.0

Re-written to avoid 'undefined behavior' by allowing containers to be polymorphic or not base on a compile time

macro.

____________________________________________________________________________________________________

10.11.2

GCC compatibility changes.

____________________________________________________________________________________________________

10.11.1

GCC compatibility changes.

____________________________________________________________________________________________________

10.11.0

Added ETL_CONSTEXPR macro and applied to various functions.

Allows C++11 and above compilers to set functions as constexpr.

____________________________________________________________________________________________________

10.10.0

Added array_wrapper

____________________________________________________________________________________________________

10.9.0

Array view

Added array_view.

____________________________________________________________________________________________________

10.8.1

Pool

Changed alignof to etl::alignment_of

____________________________________________________________________________________________________

10.8.0

Added etl::variant_pool as a replacement for etl::factory.

Deprecated etl::factory

etl::forward_list

Renamed include guard to avoid clash with list.

Removed factory from unit tests.

multimap & multiset

Changed static const to enum.

hash & strings

Removed default function template parameter value.

FSM

Moved get_fsm_context() from public to protected in etl::state

Binary

Added sign_extend functions with shift parameter.

Added new binary.cpp for non-template functions.

Added bit<> template constant

Added bit enumerations

Debug count

Added clear()

Type lookup

Simplified codebase

Message router

Added 'successor' member to allow implementation 'Chain Of Responsibility' pattern.

IO Ports

Changes value() to read().

Rewrite of classes to improve efficiency by removing iterator indirection step.

Fixed inconsistencies in the dynamic IO port API.

Type traits

Added 'conditional_integral_constant' to complement 'conditional'