[libc-commits] [PATCH] D122346: [libc] Improve the performance of exp2f.
Paul Zimmermann via Phabricator via libc-commits
libc-commits at lists.llvm.org
Thu Mar 24 02:39:05 PDT 2022
zimmermann6 accepted this revision.
zimmermann6 added a comment.
I confirm the results are still correctly rounded for all four rounding modes. For rounding to nearest the reciprocal throughput/latency decreased from 56/103.5 cycles to 26.6/76.0 cycles on a Core i5-4590.
As a comparison, the core-math code runs in 21.2/63.2 cycles.
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