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| author | Joseph Myers <joseph@codesourcery.com> | 2018-09-05 11:53:35 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2018-09-05 11:53:35 +0000 |
| commit | b9d8c47472d4acbd6b1be59c3731ecbfb790b5ce (patch) | |
| tree | 26b9531d7e90ec482d45e0c7bea48eef9fc6aedc /include | |
| parent | 418d99e622be036f44980854d585531905abae21 (diff) | |
| download | glibc-b9d8c47472d4acbd6b1be59c3731ecbfb790b5ce.tar.gz | |
Move float128 inlines from sysdeps/generic/math_private.h to include/math.h.
Continuing the cleanup of math_private.h, with a view to it becoming
the header for the APIs defined therein and not also a header with
inline variants of math.h APIs, this patch moves inline definitions of
__isinff128 and fabsf128 to include/math.h, so that any users of
math.h in glibc automatically get the optimized functions rather than
quietly missing them if they do not also include math_private.h.
Tested for x86_64 and x86, and with build-many-glibcs.py with GCC 6.
There are changes to installed stripped libc.so on configurations with
distinct _Float128, because of __printf_fp_l code that now gets the
__isinff128 inline where previously it called the out-of-line
function because of the lack of a math_private.h call. It seems
appropriate that this code does get the inline (as it would
automatically with GCC 7 and later when the built-in function is used)
rather than being the only place in glibc that does not.
* sysdeps/generic/math_private.h
[__HAVE_DISTINCT_FLOAT128 && !__GNUC_PREREQ (7, 0)] (__isinff128):
Move this inline function ....
[__HAVE_DISTINCT_FLOAT128] (fabsf128): And this one ....
* include/math.h [!_ISOMAC]: To here....
Diffstat (limited to 'include')
| -rw-r--r-- | include/math.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/math.h b/include/math.h index e21d34b868..9ab7aa4403 100644 --- a/include/math.h +++ b/include/math.h @@ -54,6 +54,29 @@ libm_hidden_proto (__expf128) libm_hidden_proto (__expm1f128) # endif +# if __HAVE_DISTINCT_FLOAT128 + +/* __builtin_isinf_sign is broken in GCC < 7 for float128. */ +# if ! __GNUC_PREREQ (7, 0) +# include <ieee754_float128.h> +extern inline int +__isinff128 (_Float128 x) +{ + int64_t hx, lx; + GET_FLOAT128_WORDS64 (hx, lx, x); + lx |= (hx & 0x7fffffffffffffffLL) ^ 0x7fff000000000000LL; + lx |= -lx; + return ~(lx >> 63) & (hx >> 62); +} +# endif + +extern inline _Float128 +fabsf128 (_Float128 x) +{ + return __builtin_fabsf128 (x); +} +# endif + # if !(defined __FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0) # ifndef NO_MATH_REDIRECT /* Declare sqrt for use within GLIBC. Compilers typically inline sqrt as a |