[libc-commits] [PATCH] D130780: [libc][math] Added tanhf function.

[Kirill Okhotnikov via Phabricator via libc-commits]

orex created this revision.
orex added reviewers: lntue, sivachandra, zimmermann6.
Herald added subscribers: libc-commits, ecnelises, tschuett, mgorny.
Herald added projects: libc-project, All.
orex requested review of this revision.

Correct rounding function. Performance ~2x faster than glibc analog.

Performance (llvm 12 intel):

  CORE_MATH_PERF_MODE=rdtsc PERF_ARGS='' ./perf.sh tanhf
  GNU libc version: 2.31
  GNU libc release: stable
  13.279
  37.492
  18.145
  CORE_MATH_PERF_MODE=rdtsc PERF_ARGS='--latency' ./perf.sh tanhf
  GNU libc version: 2.31
  GNU libc release: stable
  40.658
  109.582
  66.568


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130780

Files:
  libc/config/darwin/arm/entrypoints.txt
  libc/config/linux/aarch64/entrypoints.txt
  libc/config/linux/x86_64/entrypoints.txt
  libc/config/windows/entrypoints.txt
  libc/spec/stdc.td
  libc/src/math/CMakeLists.txt
  libc/src/math/generic/CMakeLists.txt
  libc/src/math/generic/tanhf.cpp
  libc/src/math/tanhf.h
  libc/test/src/math/CMakeLists.txt
  libc/test/src/math/exhaustive/CMakeLists.txt
  libc/test/src/math/exhaustive/tanhf_test.cpp
  libc/test/src/math/tanhf_test.cpp
  libc/utils/MPFRWrapper/MPFRUtils.cpp
  libc/utils/MPFRWrapper/MPFRUtils.h

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D130780.448630.patch
Type: text/x-patch
Size: 13543 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/libc-commits/attachments/20220729/96d46d74/attachment.bin>