Experimental C++ Features
The C++ standards committee publishes experimental C++ language and library extensions for future standardization.
Note: until 2012, these publications used the TR (technical report) format. Since 2012 ISO procedure changed to use the TS (technical specification) format.
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[edit] TR/TS specifications
ISO number | Name | Status | Links, headers |
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ISO/IEC TR 18015:2006 | Technical Report on C++ Performance | Published 2006 (ISO store).
Draft: TR18015 (2006-02-15). |
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ISO/IEC TR 19768:2007 | Technical Report on C++ Library Extensions | Published 2007-11-15 (ISO store).
Draft: N1836 (2005-06-24) |
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ISO/IEC 29124:2010 | Extensions to the C++ Library to support mathematical special functions | Published 2010-09-03 (ISO Store).
Final draft: N3060 (2010-03-06). |
Special functions |
ISO/IEC TR 24733:2011 | Extensions for the programming language C++ to support decimal floating-point arithmetic | Published 2011-10-25 (ISO Store)
Draft: N2849 (2009-03-06). |
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ISO/IEC TS 18822:2015 | C++ File System Technical Specification | Published 2015-06-18 (ISO store). Final draft: N4100 (2014-07-04). |
Filesystem, <filesystem> |
ISO/IEC TS 19570:2015 | C++ Extensions for Parallelism | Published 2015-06-24. (ISO Store). Final draft: N4507 (2015-05-05). ✔Merged into C++17. |
Parallelism |
ISO/IEC TS 19841:2015 | Transactional Memory TS | Published 2015-09-16, (ISO Store). Final draft: N4514 (2015-05-08). | Transactional memory |
ISO/IEC TS 19568:2015 | C++ Extensions for Library Fundamentals | Published 2015-09-30, (ISO Store). Final draft: N4480 (2015-04-07). ✔Merged into C++17 except for invocation traits. |
Library extensions |
ISO/IEC TS 19217:2015 | C++ Extensions for Concepts | Published 2015-11-13 (ISO Store). Final draft: N4553 (2015-10-02). Current draft: P0734R0 (2017-07-14). ✔Merged into C++20 (with modifications). |
Constraints and concepts, <concepts> |
ISO/IEC TS 19571:2016 | C++ Extensions for Concurrency | Published 2016-01-19 (ISO Store). Final draft: P0159R0 (2015-10-22). ✔Partially merged into C++20. |
Concurrency |
ISO/IEC TS 19568:2017 | C++ Extensions for Library Fundamentals, Version 2 | Published 2017-03-30 (ISO Store). Draft: N4617 (2016-11-28). ✔Partially merged into C++17 and C++20. |
Library extensions 2 |
ISO/IEC TS 21425:2017 | Ranges TS | Published 2017-12-05 (ISO Store). Draft: N4685 (2017-07-31). |
Ranges, <ranges> |
ISO/IEC TS 22277:2017 | Coroutines TS | Published 2017-12-05 (ISO Store). Draft: N4736 (2018-03-31). Latest draft: N4775 (2018-10-07). |
<coroutine> |
ISO/IEC TS 19216:2018 | Networking TS | Published 2018-04-24 (ISO Store). Draft: N4734 (2017-04-04). Latest draft: N4771 (2018-10-08). | Networking |
ISO/IEC TS 21544:2018 | Modules TS | Published 2018-05-16 (ISO Store). Final Draft: N4720 (2018-01-29). |
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ISO/IEC TS 19570:2018 | Parallelism TS Version 2 | Published 2018-11-15 (ISO Store). Final draft: N4793 (2018-11-26). Post-publication draft: N4808 (2019-03-11). See also non-TS std::simd proposals below.
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Parallelism 2 |
ISO/IEC TS 23619:2021 | Reflection TS | Published 2021-10-11 (ISO store). Draft: N4856 (2020-03-02). See also non-TS proposals below. | Reflection |
Numerics | Early development. Draft: P1889R1 (2019-12-27). | ||
ISO/IEC DTS 9922 | Concurrency TS Version 2 | Early development. Draft: N4956 (2023-07-05). | Concurrency 2 |
ISO/IEC DTS 19568 | C++ Extensions for Library Fundamentals, Version 3 | Early development. Draft: N4948 (2023-05-08). | Library extensions 3 |
ISO/IEC DTS 12907 | Transactional Memory TS, Version 2 | Early development. Draft: N4923 (2022-10-14). | |
ISO/IEC NP 19569 | Array Extensions TS | × Withdrawn. Abandoned draft: N3820 (2013-10-10). |
[edit] Non-TS proposals
Name | Status | Links, Headers | ||
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Linear Algebra | ✔Merged into C++26. Proposal: P1673R13 (2023-11-10).
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<linalg> | ||
std::execution | Forwarded to LWG, wording in progress. ✔Merged into C++26. Proposal: P2300R10 (2024-06-28).
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Execution, <execution> | ||
std::inplace_vector | ✔Merged into C++26. Proposal: P0843R14 (2024-06-26). | <inplace_vector> | ||
Pattern Matching | Early development. Draft P1371R3 (2020-09-15).
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Reflection | The main document (ISO/IEC TS 23619:2021) is described in Reflection TS above.
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Reflection | ||
std::simd
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The main document (TS ISO/IEC 19570:2018) is described in "C++ Extensions for Parallelism V2" above.
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Data parallel types | ||
Contracts | Early development. Proposal P2659R2 (2022-11-30). Draft P2660R0 (2022-10-14).
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2D Graphics | Early development. Draft P0267R10 (2019-10-07). | |||
Graph Library | Early development. |
[edit] See also
C documentation for Experimental C features
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[edit] External links
1. | PL22.16/WG21 document list - All C++ committee documents (TS/proposals) for 2016-2024. |
2. | JTC1/SC22/WG21 Proposals (mailing) for 2024. |