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-rw-r--r--sysdeps/x86_64/fpu/dla.h (renamed from sysdeps/x86_64/dla.h)9
1 files changed, 8 insertions, 1 deletions
diff --git a/sysdeps/x86_64/dla.h b/sysdeps/x86_64/fpu/dla.h
index 6fe8f740f3..fa2d52bbf0 100644
--- a/sysdeps/x86_64/dla.h
+++ b/sysdeps/x86_64/fpu/dla.h
@@ -1,10 +1,17 @@
+#include <features.h>
+
#ifdef __FMA4__
-# define DLA_FMS(x,y,z) \
+# if __GNUC_PREREQ (4, 6)
+# define DLA_FMS(x,y,z) \
+ __builtin_fma (x, y, -(z))
+# else
+# define DLA_FMS(x,y,z) \
({ double __z; \
asm ("vfmsubsd %3, %2, %1, %0" \
: "=x" (__z) \
: "x" ((double) (x)), "xm" ((double) (y)) , "x" ((double) (z))); \
__z; })
+# endif
#endif
#include "sysdeps/ieee754/dbl-64/dla.h"