Fix x86_64 bits/mathinline.h for -m32 compilation.

git-mirror · Sep 1, 2009 · 2404410 · 2404410
1 parent c2735e9
commit 2404410
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diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,8 @@
+2009-09-01  Jakub Jelinek  <jakub@redhat.com>
+
+	* sysdeps/x86_64/fpu/bits/mathinline.h: Include bits/wordsize.h.
+	(__signbitf, __signbit): Only use SSE inline asm for 64-bit.
+
 2009-08-31  Andreas Schwab  <schwab@redhat.com>
 
 	* sysdeps/x86_64/fpu/bits/mathinline.h: Use __asm instead of asm.

diff --git a/sysdeps/x86_64/fpu/bits/mathinline.h b/sysdeps/x86_64/fpu/bits/mathinline.h
@@ -22,6 +22,8 @@
 # error "Never use <bits/mathinline.h> directly; include <math.h> instead."
 #endif
 
+#include <bits/wordsize.h>
+
 #ifndef __extern_inline
 # define __MATH_INLINE __inline
 #else
@@ -35,16 +37,26 @@
 __MATH_INLINE int
 __NTH (__signbitf (float __x))
 {
+#if __WORDSIZE == 32
+  __extension__ union { float __f; int __i; } __u = { __f: __x };
+  return __u.__i < 0;
+#else
   int __m;
   __asm ("pmovmskb %1, %0" : "=r" (__m) : "x" (__x));
   return __m & 0x8;
+#endif
 }
 __MATH_INLINE int
 __NTH (__signbit (double __x))
 {
+#if __WORDSIZE == 32
+  __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
+  return __u.__i[1] < 0;
+#else
   int __m;
   __asm ("pmovmskb %1, %0" : "=r" (__m) : "x" (__x));
   return __m & 0x80;
+#endif
 }
 __MATH_INLINE int
 __NTH (__signbitl (long double __x))