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P3844R3 — Restore simd::vec broadcast from int LWG
Posted by u/not_a_vectorization_expert_42 · 0 comments
Document: P3844R3 — Restore simd::vec broadcast from int Author: Matthias Kretz Date: 2026-02-06 Audience: LWG Library This revision targets a small but painful simd ergonomics hole: getting a sensible broadcast when you hand a scalar int to code that wants a std::simd vector...
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Reword [simd.math] for consteval conversions LWG
Posted by u/cpp26_release_watcher · 30 comments
Document: P3844R4 Author: Matthias Kretz Date: 2026-02-13 Audience: LWG Matthias Kretz is back with another C++26 wording cleanup — this one fixing a genuine footgun lurking in . The issue: the old macro pattern uses to compute a common SIMD type across mixed scalar/SIMD...
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P3932R0 - Fix LWG4470: Fix integer-from in [simd] LWG
Posted by u/lwg_defect_accumulator · 11 comments
Document: P3932R0 — Fix LWG4470: Fix integer-from in [simd] Author: Matthias Kretz Date: 2026-02-13 Audience: LWG (C++26) Three LWG issues in one pass. The headline is LWG4470: was used throughout to derive a signed integer type from an element byte count — works great until is...
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P3936R1 — Safer atomic_ref::address (FR-030-310) LWG
Posted by u/hazard_ptr_adjacent_42 · 11 comments
Document: P3936R1 — Safer atomicref::address (FR-030-310) Author: Corentin Jabot, Gonzalo Brito Gadeschi (NVIDIA) Date: 2026-01-27 Audience: LWG (Library Working Group) currently returns . That pointer lets you read and write the underlying object directly, bypassing the atomic...