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authorXiaolin Tang <tangxiaolin@loongson.cn>2022-11-23 11:44:58 +0800
committercaiyinyu <caiyinyu@loongson.cn>2022-11-29 16:00:28 +0800
commita1981ecbfd4aec84dea26936d91c8ed9164f8b13 (patch)
treed78cf6c9ba6e1b931c8ad01c9844c9665651175c /sysdeps/ieee754
parente1697a540c49d5bd35e84b22fcd537c14f71a4e9 (diff)
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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')
-rw-r--r--sysdeps/ieee754/dbl-64/s_llrint.c18
-rw-r--r--sysdeps/ieee754/float128/float128_private.h2
-rw-r--r--sysdeps/ieee754/flt-32/s_llrintf.c18
-rw-r--r--sysdeps/ieee754/ldbl-128/s_llrintl.c17
4 files changed, 38 insertions, 17 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)
diff --git a/sysdeps/ieee754/float128/float128_private.h b/sysdeps/ieee754/float128/float128_private.h
index a452ced89a..3bb5fffa74 100644
--- a/sysdeps/ieee754/float128/float128_private.h
+++ b/sysdeps/ieee754/float128/float128_private.h
@@ -163,6 +163,8 @@
#define USE_FMAL_BUILTIN USE_FMAF128_BUILTIN
#undef USE_LRINTL_BUILTIN
#define USE_LRINTL_BUILTIN USE_LRINTF128_BUILTIN
+#undef USE_LLRINTL_BUILTIN
+#define USE_LLRINTL_BUILTIN USE_LLRINTF128_BUILTIN
/* IEEE function renames. */
#define __ieee754_acoshl __ieee754_acoshf128
diff --git a/sysdeps/ieee754/flt-32/s_llrintf.c b/sysdeps/ieee754/flt-32/s_llrintf.c
index 226b8261d3..79e3c385d1 100644
--- a/sysdeps/ieee754/flt-32/s_llrintf.c
+++ b/sysdeps/ieee754/flt-32/s_llrintf.c
@@ -25,17 +25,22 @@
#include <math_private.h>
#include <libm-alias-float.h>
#include <fix-fp-int-convert-overflow.h>
-
-static const float two23[2] =
-{
- 8.3886080000e+06, /* 0x4B000000 */
- -8.3886080000e+06, /* 0xCB000000 */
-};
+#include <math-use-builtins.h>
long long int
__llrintf (float x)
{
+#if USE_LLRINTF_BUILTIN
+ return __builtin_llrintf (x);
+#else
+ /* Use generic implementation. */
+ static const float two23[2] =
+ {
+ 8.3886080000e+06, /* 0x4B000000 */
+ -8.3886080000e+06, /* 0xCB000000 */
+ };
+
int32_t j0;
uint32_t i0;
float w;
@@ -82,6 +87,7 @@ __llrintf (float x)
}
return sx ? -result : result;
+#endif /* ! USE_LLRINTF_BUILTIN */
}
libm_alias_float (__llrint, llrint)
diff --git a/sysdeps/ieee754/ldbl-128/s_llrintl.c b/sysdeps/ieee754/ldbl-128/s_llrintl.c
index 79d3937cc9..3a5635d509 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)