You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.1 KiB
74 lines
2.1 KiB
# 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
|
|
|