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| author | Stefan Liebler <stli@linux.ibm.com> | 2019-12-11 15:09:21 +0100 |
|---|---|---|
| committer | Stefan Liebler <stli@linux.ibm.com> | 2019-12-11 15:12:17 +0100 |
| commit | 62560ee84095274bab1050817f42e782df226a17 (patch) | |
| tree | 2cbaf3b217ed1ce2555b1df91254fa8526f5ea43 /sysdeps/ieee754/dbl-64 | |
| parent | 6c1b6a5e8cd91e0e1965509ad91e627e60eb00a3 (diff) | |
| download | glibc-62560ee84095274bab1050817f42e782df226a17.zip glibc-62560ee84095274bab1050817f42e782df226a17.tar.gz glibc-62560ee84095274bab1050817f42e782df226a17.tar.bz2 | |
Use GCC builtins for ceil functions if desired.
This patch is using the corresponding GCC builtin for ceilf, ceil,
ceill and ceilf128 if the USE_FUNCTION_BUILTIN macros are defined to one
in math-use-builtins.h.
This is the case for s390 if build with at least --march=z196 --mzarch.
Otherwise the generic implementation is used. The code of the generic
implementation is not changed.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/ieee754/dbl-64')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_ceil.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_ceil.c b/sysdeps/ieee754/dbl-64/s_ceil.c index 8d66f02..3738211 100644 --- a/sysdeps/ieee754/dbl-64/s_ceil.c +++ b/sysdeps/ieee754/dbl-64/s_ceil.c @@ -21,10 +21,15 @@ #include <math.h> #include <math_private.h> #include <libm-alias-double.h> +#include <math-use-builtins.h> double __ceil (double x) { +#if USE_CEIL_BUILTIN + return __builtin_ceil (x); +#else + /* Use generic implementation. */ int64_t i0, i; int32_t j0; EXTRACT_WORDS64 (i0, x); @@ -58,6 +63,7 @@ __ceil (double x) } INSERT_WORDS64 (x, i0); return x; +#endif /* ! USE_CEIL_BUILTIN */ } #ifndef __ceil libm_alias_double (__ceil, ceil) |