WG21 PAPERS

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Filter and export papers from the C++ Committee’s monthly mailings by time frame and audience using the options below, or refine your export further with the Select button. Paper numbers and titles open each paper’s page, with its revision history and a link to the official copy on open-std.org.

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Select	Paper	Title	Authors	Audience	Doc Date	Mailing Date
	P3642R7	Carry-less product: std::clmul	Jan Schultke J. Schultke	LWG	2026-09-21	2026-09
Doc Date 2026-09-21 Mailing Date 2026-09 Unassigned Author(s) Jan Schultke Target Audience LWG Revisions R6 R5 R4 R2 R1 Tracking issue View on GitHub Abstract Add widening and non-widening carry-less multiplication functions.
	P3643R3	std::to_signed and std::to_unsigned	Jan Schultke J. Schultke	LEWG	2026-08-23	2026-09
Doc Date 2026-08-23 Mailing Date 2026-09 Unassigned Author(s) Jan Schultke Target Audience LEWG Revisions R5 R4 Tracking issue View on GitHub Abstract Add `std::to_signed` and `std::to_unsigned` function templates in the style of `std::to_underlying`.
	P3688R7	ASCII character utilities	Jan Schultke J. Schultke , Corentin Jabot C. Jabot	LEWG	2026-08-23	2026-09
Doc Date 2026-08-23 Mailing Date 2026-09 Unassigned Author(s) Jan Schultke, Corentin Jabot Target Audience LEWG Revisions R6 R1 Tracking issue View on GitHub Abstract The utilities in `<cctype>` or `<locale>` are locale-specific, not `constexpr`, and provide no support for Unicode character types. We propose lightweight, locale-independent alternatives.
	P3876R3	Extending <charconv> support to more character types	Jan Schultke J. Schultke , Peter Bindels P. Bindels	LEWG	2026-08-31	2026-09
Doc Date 2026-08-31 Mailing Date 2026-09 Unassigned Author(s) Jan Schultke, Peter Bindels Target Audience LEWG Revisions R2 R1 Tracking issue View on GitHub Abstract `std::to_chars` and `std::from_chars` currently only provide support for `char`, which causes several usability problems. This paper proposes to extend support to all other character types, with essentially the same behavior.
	P4040R2	Case ranges	Jan Schultke J. Schultke	EWG	2026-09-21	2026-09
Doc Date 2026-09-21 Mailing Date 2026-09 Unassigned Author(s) Jan Schultke Target Audience EWG Revisions R1 R0 Tracking issue View on GitHub Abstract C2y added ranges in `case` labels, such as `case 0 ... 9:`. Such case ranges have also been supported as a C++ compiler extension for many years. This feature should be standardized for C++.
	P4168R1	Fix defects in floating-point std::from_chars (LWG3081, LWG3082, LWG3456)	Jan Schultke J. Schultke	LEWG	2026-09-21	2026-09
Doc Date 2026-09-21 Mailing Date 2026-09 Unassigned Author(s) Jan Schultke Target Audience LEWG Revisions R0 Tracking issue View on GitHub Abstract This paper supersedes [[P2827R1]](https://wg21%2elink/p2827r1) and fixes [[LWG3081]](https://wg21%2elink/LWG3081), [[LWG3082]](https://wg21%2elink/LWG3082), and [[LWG3456]](https://wg21%2elink/LWG3456). It is intended as a defect report for C++17. The handling of floating-point overflow and underflow in `std::from_chars` is inconsistent; the implementations diverge from each other, and every imple
	P4355R0	Floating-point std::saturating_cast	Jan Schultke J. Schultke , Matt Borland M. Borland	SG6	2026-08-30	2026-09
Doc Date 2026-08-30 Mailing Date 2026-09 Unassigned Author(s) Jan Schultke, Matt Borland Target Audience SG6 Revisions R1 Tracking issue View on GitHub Abstract `std::saturating_cast` should accept floating-point operands.
	P4444R0	std::big_int	Jan Schultke J. Schultke , Matt Borland M. Borland , Christopher Kormanyos C. Kormanyos	SG6	2026-09-22	2026-09
Doc Date 2026-09-22 Mailing Date 2026-09 Unassigned Author(s) Jan Schultke, Matt Borland, Christopher Kormanyos Target Audience SG6 Revisions R1 Tracking issue View on GitHub Abstract We propose an infinite-precision integer in the form of a class template, with elastic operations.

Showing 8 of 8 papers · source: open-std.org

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