[libc-commits] [PATCH] D152280: [libc] Add platform independent floating point rounding mode checks.

[Tue Ly via Phabricator via libc-commits]

lntue created this revision.
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Many math functions need to check for floating point rounding modes to
return correct values.  Currently most of them use the internal implementation
of `fegetround`, which is platform-dependent and blocking math functions to be
enabled on platforms with unimplemented `fegetround`.  In this change, we add
platform independent rounding mode checks and switching math functions to use
them instead. https://github.com/llvm/llvm-project/issues/63016


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D152280

Files:
  libc/src/__support/FPUtil/FEnvImpl.h
  libc/src/__support/FPUtil/Hypot.h
  libc/src/__support/FPUtil/NearestIntegerOperations.h
  libc/src/__support/FPUtil/except_value_utils.h
  libc/src/__support/FPUtil/generic/FMA.h
  libc/src/__support/FPUtil/generic/sqrt.h
  libc/src/__support/FPUtil/generic/sqrt_80_bit_long_double.h
  libc/src/__support/str_to_float.h
  libc/src/math/generic/atanf.cpp
  libc/src/math/generic/coshf.cpp
  libc/src/math/generic/exp10f.cpp
  libc/src/math/generic/exp2f.cpp
  libc/src/math/generic/expf.cpp
  libc/src/math/generic/expm1f.cpp
  libc/src/math/generic/sincosf.cpp
  libc/src/math/generic/sinf.cpp
  libc/src/math/generic/sinhf.cpp
  libc/src/math/generic/tanhf.cpp
  libc/src/stdio/printf_core/float_dec_converter.h
  libc/src/stdio/printf_core/float_hex_converter.h
  libc/test/src/__support/FPUtil/CMakeLists.txt
  libc/test/src/__support/FPUtil/fenvimpl_test.cpp

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