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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-04-08 19:51:44 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-06-19 12:08:47 -0300 |
| commit | be668a8d782ab6bf363d4cdd7086295b5eebb8ea (patch) | |
| tree | 5db51571d98c5e41e4b65e2079713558661f7a04 /math | |
| parent | 4b2d8e4442745a09f24804c1fcc97b7c5c4506f1 (diff) | |
| download | glibc-be668a8d782ab6bf363d4cdd7086295b5eebb8ea.zip glibc-be668a8d782ab6bf363d4cdd7086295b5eebb8ea.tar.gz glibc-be668a8d782ab6bf363d4cdd7086295b5eebb8ea.tar.bz2 | |
New exp10f version without SVID compat wrapper
This patch changes the exp10f error handling semantics to only set
errno according to POSIX rules. New symbol version is introduced at
GLIBC_2.32. The old wrappers are kept for compat symbols.
There are some outliers that need special handling:
- ia64 provides an optimized implementation of exp10f that uses ia64
specific routines to set SVID compatibility. The new symbol version
is aliased to the exp10f one.
- m68k also provides an optimized implementation, and the new version
uses it instead of the sysdeps/ieee754/flt32 one.
- riscv and csky uses the generic template implementation that
does not provide SVID support. For both cases a new exp10f
version is not added, but rather the symbols version of the
generic sysdeps/ieee754/flt32 is adjusted instead.
Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
powerpc64le-linux-gnu.
Diffstat (limited to 'math')
| -rw-r--r-- | math/Versions | 3 | ||||
| -rw-r--r-- | math/w_exp10f.c | 1 | ||||
| -rw-r--r-- | math/w_exp10f_compat.c | 8 |
3 files changed, 8 insertions, 4 deletions
diff --git a/math/Versions b/math/Versions index d892c5f..5b3c321 100644 --- a/math/Versions +++ b/math/Versions @@ -590,4 +590,7 @@ libm { totalorderf128; totalordermagf128; } + GLIBC_2.32 { + exp10f; + } } diff --git a/math/w_exp10f.c b/math/w_exp10f.c new file mode 100644 index 0000000..6e25b02 --- /dev/null +++ b/math/w_exp10f.c @@ -0,0 +1 @@ +/* Empty. */ diff --git a/math/w_exp10f_compat.c b/math/w_exp10f_compat.c index 2ab0940..ea8f947 100644 --- a/math/w_exp10f_compat.c +++ b/math/w_exp10f_compat.c @@ -28,9 +28,9 @@ #if LIBM_SVID_COMPAT float -__exp10f (float x) +__exp10f_compat (float x) { - float z = __ieee754_exp10f (x); + float z = __exp10f (x); if (__builtin_expect (!isfinite (z) || z == 0, 0) && isfinite (x) && _LIB_VERSION != _IEEE_) /* exp10f overflow (146) if x > 0, underflow (147) if x < 0. */ @@ -38,9 +38,9 @@ __exp10f (float x) return z; } -libm_alias_float (__exp10, exp10) +compat_symbol (libm, __exp10f_compat, exp10f, GLIBC_2_1); # if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_27) -strong_alias (__exp10f, __pow10f) +strong_alias (__exp10f_compat, __pow10f) compat_symbol (libm, __pow10f, pow10f, GLIBC_2_1); # endif #endif |