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75 lines
2.1 KiB
75 lines
2.1 KiB
7 years ago
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# commit 2ca85d2bbbaa60b9c83bf1f57a2801c84e0a3625
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# Author: Anton Blanchard <anton@au1.ibm.com>
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# Date: Sat Aug 17 18:28:06 2013 +0930
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#
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# PowerPC floating point little-endian [7 of 15]
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# http://sourceware.org/ml/libc-alpha/2013-08/msg00086.html
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#
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# * sysdeps/powerpc/bits/mathinline.h (__signbitf): Use builtin.
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# (__signbit): Likewise. Correct for little-endian.
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# (__signbitl): Call __signbit.
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# (lrint): Correct for little-endian.
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# (lrintf): Call lrint.
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#
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diff -urN glibc-2.17-c758a686/sysdeps/powerpc/fpu/bits/mathinline.h glibc-2.17-c758a686/sysdeps/powerpc/fpu/bits/mathinline.h
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--- glibc-2.17-c758a686/sysdeps/powerpc/fpu/bits/mathinline.h 2014-05-27 22:28:12.000000000 -0500
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+++ glibc-2.17-c758a686/sysdeps/powerpc/fpu/bits/mathinline.h 2014-05-27 22:28:37.000000000 -0500
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@@ -62,21 +62,28 @@
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__MATH_INLINE int
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__NTH (__signbitf (float __x))
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{
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+#if __GNUC_PREREQ (4, 0)
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+ return __builtin_signbitf (__x);
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+#else
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__extension__ union { float __f; int __i; } __u = { __f: __x };
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return __u.__i < 0;
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+#endif
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}
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__MATH_INLINE int
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__NTH (__signbit (double __x))
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{
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- __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
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- return __u.__i[0] < 0;
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+#if __GNUC_PREREQ (4, 0)
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+ return __builtin_signbit (__x);
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+#else
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+ __extension__ union { double __d; long long __i; } __u = { __d: __x };
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+ return __u.__i < 0;
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+#endif
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}
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# ifdef __LONG_DOUBLE_128__
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__MATH_INLINE int
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__NTH (__signbitl (long double __x))
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{
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- __extension__ union { long double __d; int __i[4]; } __u = { __d: __x };
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- return __u.__i[0] < 0;
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+ return __signbit ((double) __x);
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}
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# endif
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# endif
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@@ -93,22 +100,17 @@
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{
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union {
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double __d;
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- int __ll[2];
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+ long long __ll;
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} __u;
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__asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
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- return __u.__ll[1];
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+ return __u.__ll;
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}
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__MATH_INLINE long int lrintf (float __x) __THROW;
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__MATH_INLINE long int
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__NTH (lrintf (float __x))
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{
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- union {
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- double __d;
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- int __ll[2];
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- } __u;
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- __asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
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- return __u.__ll[1];
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+ return lrint ((double) __x);
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}
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# endif
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