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| author | Xiaolin Tang <tangxiaolin@loongson.cn> | 2022-11-23 11:44:58 +0800 |
|---|---|---|
| committer | caiyinyu <caiyinyu@loongson.cn> | 2022-11-29 16:00:28 +0800 |
| commit | a1981ecbfd4aec84dea26936d91c8ed9164f8b13 (patch) | |
| tree | d78cf6c9ba6e1b931c8ad01c9844c9665651175c /sysdeps/ieee754/ldbl-128 | |
| parent | e1697a540c49d5bd35e84b22fcd537c14f71a4e9 (diff) | |
| download | glibc-a1981ecbfd4aec84dea26936d91c8ed9164f8b13.zip glibc-a1981ecbfd4aec84dea26936d91c8ed9164f8b13.tar.gz glibc-a1981ecbfd4aec84dea26936d91c8ed9164f8b13.tar.bz2 | |
Use GCC builtins for llrint functions if desired.
This patch is using the corresponding GCC builtin for llrintf, llrint,
llrintl and llrintf128 if the USE_FUNCTION_BUILTIN macros are defined to one
in math-use-builtins-function.h.
Co-Authored-By: Xi Ruoyao <xry111@xry111.site>
Diffstat (limited to 'sysdeps/ieee754/ldbl-128')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/s_llrintl.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/sysdeps/ieee754/ldbl-128/s_llrintl.c b/sysdeps/ieee754/ldbl-128/s_llrintl.c index 79d3937..3a5635d 100644 --- a/sysdeps/ieee754/ldbl-128/s_llrintl.c +++ b/sysdeps/ieee754/ldbl-128/s_llrintl.c @@ -24,16 +24,22 @@ #include <math_private.h> #include <libm-alias-ldouble.h> #include <fix-fp-int-convert-overflow.h> +#include <math-use-builtins.h> -static const _Float128 two112[2] = -{ - L(5.19229685853482762853049632922009600E+33), /* 0x406F000000000000, 0 */ - L(-5.19229685853482762853049632922009600E+33) /* 0xC06F000000000000, 0 */ -}; long long int __llrintl (_Float128 x) { +#if USE_LLRINTL_BUILTIN + return __builtin_round (x); +#else + /* Use generic implementation. */ + static const _Float128 two112[2] = + { + L(5.19229685853482762853049632922009600E+33), /* 0x406F000000000000, 0 */ + L(-5.19229685853482762853049632922009600E+33) /* 0xC06F000000000000, 0 */ + }; + int32_t j0; uint64_t i0,i1; _Float128 w; @@ -102,6 +108,7 @@ __llrintl (_Float128 x) } return sx ? -result : result; +#endif /* ! USE_LLRINTL_BUILTIN */ } libm_alias_ldouble (__llrint, llrint) |