WG21 PAPERS

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Select	Paper	Title	Authors	Audience
	P2964R4	Allowing user-defined types in std::simd	D. Towner, R. Arutyunyan	LEWG SG6
Mailing Date 2026-05 Pre-Brno Author(s) Daniel Towner, Ruslan Arutyunyan Target Audience LEWG SG6 Revisions R5 R3 R2 Tracking issue View on GitHub Abstract The C++ standard library includes data-parallel types in the `<simd>` header, currently restricting element types to a closed list of built-in vectorizable types: arithmetic types and `std::complex` specializations. This paper proposes a minimal change to the specification in which this list is extended. Firstly, `std::byte` is added to the closed list as a standard library type with fixed seman
	P4209R0	numeric_limits for std::simd	D. Towner	LEWG SG6
Mailing Date 2026-05 Pre-Brno Author(s) Daniel Towner Target Audience LEWG SG6 Tracking issue View on GitHub Abstract The SIMD working draft introduces `std::simd::basic_vec<T, Abi>` as an element-wise parallel extension of an element type `T`. A central goal is to allow the same generic numeric code to operate on scalar `T` and on `basic_vec<T, Abi>` interchangeably. Most non-trivial numeric code that aims for that behaviour would require `std::numeric_limits<V>` somewhere. For example:

Showing 2 of 2 papers · source: open-std.org

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