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| author | Xiaolin Tang <tangxiaolin@loongson.cn> | 2022-11-23 11:44:56 +0800 |
|---|---|---|
| committer | caiyinyu <caiyinyu@loongson.cn> | 2022-11-29 16:00:28 +0800 |
| commit | 2b23ab1feab5a59bcc1931666663b2a8eac3fdbc (patch) | |
| tree | 037d70b1f7a836854162a9f86c2ed62a834130c7 /sysdeps/ieee754/dbl-64/s_lrint.c | |
| parent | 948652e4f82f5aedbe882178ae158990bde63c79 (diff) | |
| download | glibc-2b23ab1feab5a59bcc1931666663b2a8eac3fdbc.zip glibc-2b23ab1feab5a59bcc1931666663b2a8eac3fdbc.tar.gz glibc-2b23ab1feab5a59bcc1931666663b2a8eac3fdbc.tar.bz2 | |
Use GCC builtins for lrint functions if desired.
This patch is using the corresponding GCC builtin for lrintf, lrint,
lrintl and lrintf128 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/s_lrint.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_lrint.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_lrint.c b/sysdeps/ieee754/dbl-64/s_lrint.c index d427291..2438503 100644 --- a/sysdeps/ieee754/dbl-64/s_lrint.c +++ b/sysdeps/ieee754/dbl-64/s_lrint.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 int __lrint (double x) { +#if USE_LRINT_BUILTIN + return __builtin_lrint (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 i0, i1; double w; @@ -119,6 +124,7 @@ __lrint (double x) } return sx ? -result : result; +#endif /* ! USE_LRINT_BUILTIN */ } libm_alias_double (__lrint, lrint) |