[all-commits] [llvm/llvm-project] 42f183: [libc] Change sinf/cosf range reduction to mod pi/...

[lntue via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 42f183792c8c418da7a34f1c700755dc65cafdfc
      https://github.com/llvm/llvm-project/commit/42f183792c8c418da7a34f1c700755dc65cafdfc
  Author: Tue Ly <lntue at google.com>
  Date:   2022-08-11 (Thu, 11 Aug 2022)

  Changed paths:
    M libc/docs/math.rst
    M libc/src/math/generic/cosf.cpp
    M libc/src/math/generic/range_reduction.h
    M libc/src/math/generic/range_reduction_fma.h
    M libc/src/math/generic/sincosf.cpp
    M libc/src/math/generic/sincosf_utils.h
    M libc/src/math/generic/sinf.cpp

  Log Message:
  -----------
  [libc] Change sinf/cosf range reduction to mod pi/32 to be shared with tanf.

Change sinf/cosf range reduction to mod pi/32 to be shared with tanf,
since polynomial approximations for tanf on subintervals of length pi/16 do not
provide enough accuracy.

Reviewed By: orex

Differential Revision: https://reviews.llvm.org/D131652