P1928R15 <simd>

[StephanTLavavej]

WG21-P1928R15 <simd>
WG21-P2663R7 <simd> Support For Interleaved Complex Values
WG21-P2933R4 <simd> Bit Manipulation
WG21-P3441R2 Rename simd_split To simd_chunk
WG21-P3287R3 <simd> namespace std::datapar
WG21-P3430R3 <simd> Issues

(Note the ordering: simd_chunk was immediately renamed again to std::datapar::chunk. The dust will settle when a new WP is published.)

Note: If some of these links appear to be broken, don't worry! Papers are often revised during a WG21 meeting before the final vote. When that happens, there's a delay of a few weeks between the end of the meeting and the publication of the papers. When the papers are available, the https://wg21.link redirector will start working.

Feature-test macros (expected):

#define __cpp_lib_simd 202502L
#define __cpp_lib_simd_complex 202502L

We need to teach the IDE about this new extensionless header.

Note: We're focused on implementing the remaining library-only features in C++23. Until that's done, we will NOT be accepting PRs for C++26 features.