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# commit 2ca85d2bbbaa60b9c83bf1f57a2801c84e0a3625
# Author: Anton Blanchard <anton@au1.ibm.com>
# Date: Sat Aug 17 18:28:06 2013 +0930
#
# 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.
#
diff -urN glibc-2.17-c758a686/sysdeps/powerpc/fpu/bits/mathinline.h glibc-2.17-c758a686/sysdeps/powerpc/fpu/bits/mathinline.h
--- glibc-2.17-c758a686/sysdeps/powerpc/fpu/bits/mathinline.h 2014-05-27 22:28:12.000000000 -0500
+++ glibc-2.17-c758a686/sysdeps/powerpc/fpu/bits/mathinline.h 2014-05-27 22:28:37.000000000 -0500
@@ -62,21 +62,28 @@
__MATH_INLINE int
__NTH (__signbitf (float __x))
{
+#if __GNUC_PREREQ (4, 0)
+ return __builtin_signbitf (__x);
+#else
__extension__ union { float __f; int __i; } __u = { __f: __x };
return __u.__i < 0;
+#endif
}
__MATH_INLINE int
__NTH (__signbit (double __x))
{
- __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
- return __u.__i[0] < 0;
+#if __GNUC_PREREQ (4, 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__
__MATH_INLINE int
__NTH (__signbitl (long double __x))
{
- __extension__ union { long double __d; int __i[4]; } __u = { __d: __x };
- return __u.__i[0] < 0;
+ return __signbit ((double) __x);
}
# endif
# endif
@@ -93,22 +100,17 @@
{
union {
double __d;
- int __ll[2];
+ long long __ll;
} __u;
__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
__NTH (lrintf (float __x))
{
- union {
- double __d;
- int __ll[2];
- } __u;
- __asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
- return __u.__ll[1];
+ return lrint ((double) __x);
}
# endif