qiurui
/
glibc
mirror of git://sourceware.org/git/glibc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

PowerPC floating point little-endian [7 of 15] 

http://sourceware.org/ml/libc-alpha/2013-08/msg00086.html

	* sysdeps/powerpc/bits/mathinline.h (__signbitf): Use builtin.
	(__signbit): Likewise.  Correct for little-endian.
	(__signbitl): Call __signbit.
	(lrint): Correct for little-endian.
	(lrintf): Call lrint.
This commit is contained in:
Anton Blanchard 2013-08-17 18:28:06 +09:30 committed by Alan Modra
parent 62a728aeff
commit 2ca85d2bbb
2 changed files with 22 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
ChangeLog
View File

@ -1,3 +1,11 @@
2013-10-04 Anton Blanchard <anton@au1.ibm.com>
* sysdeps/powerpc/bits/mathinline.h (__signbitf): Use builtin.
(__signbit): Likewise. Correct for little-endian.
(__signbitl): Call __signbit.
(lrint): Correct for little-endian.
(lrintf): Call lrint.
2013-10-04 Alan Modra <amodra@gmail.com> 2013-10-04 Alan Modra <amodra@gmail.com>
* sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c (mynumber): Replace * sysdeps/ieee754/ldbl-128ibm/e_sqrtl.c (mynumber): Replace

26
sysdeps/powerpc/bits/mathinline.h
View File

@ -61,21 +61,28 @@
__MATH_INLINE int __MATH_INLINE int
__NTH (__signbitf (float __x)) __NTH (__signbitf (float __x))
{ {
#if __GNUC_PREREQ (4, 0)
return __builtin_signbitf (__x);
#else
__extension__ union { float __f; int __i; } __u = { __f: __x }; __extension__ union { float __f; int __i; } __u = { __f: __x };
return __u.__i < 0; return __u.__i < 0;
#endif
} }
__MATH_INLINE int __MATH_INLINE int
__NTH (__signbit (double __x)) __NTH (__signbit (double __x))
{ {
__extension__ union { double __d; int __i[2]; } __u = { __d: __x }; #if __GNUC_PREREQ (4, 0)
return __u.__i[0] < 0; return __builtin_signbit (__x);
#else
__extension__ union { double __d; long long __i; } __u = { __d: __x };
return __u.__i < 0;
#endif
} }
# ifdef __LONG_DOUBLE_128__ # ifdef __LONG_DOUBLE_128__
__MATH_INLINE int __MATH_INLINE int
__NTH (__signbitl (long double __x)) __NTH (__signbitl (long double __x))
{ {
__extension__ union { long double __d; int __i[4]; } __u = { __d: __x }; return __signbit ((double) __x);
return __u.__i[0] < 0;
} }
# endif # endif
# endif # endif
@ -92,22 +99,17 @@ __NTH (lrint (double __x))
{ {
union { union {
double __d; double __d;
int __ll[2]; long long __ll;
} __u; } __u;
__asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x)); __asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
return __u.__ll[1]; return __u.__ll;
} }
__MATH_INLINE long int lrintf (float __x) __THROW; __MATH_INLINE long int lrintf (float __x) __THROW;
__MATH_INLINE long int __MATH_INLINE long int
__NTH (lrintf (float __x)) __NTH (lrintf (float __x))
{ {
union { return lrint ((double) __x);
double __d;
int __ll[2];
} __u;
__asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
return __u.__ll[1];
} }
# endif # endif