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0e1a1178ee
The optimized i386 version is faster than the generic one, and gcc implements it through the builtin. This optimization enables us to migrate the implementation to a C version. The performance on a Zen3 chip is similar to the SVID one. The m68k provided an optimized version through __m81_u(remainderf) (mathimpl.h), and gcc does not implement it through a builtin (different than i386). Performance improves a bit on x86_64 (Zen3, gcc 15.2.1): reciprocal-throughput input master NO-SVID improvement x86_64 subnormals 18.8522 16.2506 13.80% x86_64 normal 421.8260 403.9270 4.24% x86_64 close-exponent 21.0579 18.7642 10.89% i686 subnormals 21.3443 21.4229 -0.37% i686 normal 525.8380 538.807 -2.47% i686 close-exponent 21.6589 21.7983 -0.64% Tested on x86_64-linux-gnu and i686-linux-gnu. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>