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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/dbl-64 | |
| parent | e1697a540c49d5bd35e84b22fcd537c14f71a4e9 (diff) | |
| download | glibc-a1981ecbfd4aec84dea26936d91c8ed9164f8b13.tar.gz glibc-a1981ecbfd4aec84dea26936d91c8ed9164f8b13.tar.xz glibc-a1981ecbfd4aec84dea26936d91c8ed9164f8b13.zip | |
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/dbl-64')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_llrint.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_llrint.c b/sysdeps/ieee754/dbl-64/s_llrint.c index dc8d9948df..88c8ec3624 100644 --- a/sysdeps/ieee754/dbl-64/s_llrint.c +++ b/sysdeps/ieee754/dbl-64/s_llrint.c @@ -25,17 +25,22 @@ #include <math_private.h> #include <libm-alias-double.h> #include <fix-fp-int-convert-overflow.h> - -static const double two52[2] = -{ - 4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */ - -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */ -}; +#include <math-use-builtins.h> long long int __llrint (double x) { +#if USE_LLRINT_BUILTIN + return __builtin_llrint (x); +#else + /* Use generic implementation. */ + static const double two52[2] = + { + 4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */ + -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */ + }; + int32_t j0; uint32_t i1, i0; long long int result; @@ -95,6 +100,7 @@ __llrint (double x) } return sx ? -result : result; +#endif /* ! USE_LLRINT_BUILTIN */ } libm_alias_double (__llrint, llrint) |