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

diff --git a/ChangeLog b/ChangeLog
index d230db7..b4e6966 100644 (file)
--- 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
index ece0f02..dc58f67 100644 (file)
--- 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))