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authorMichael Meissner <meissner@linux.vnet.ibm.com>2010-10-19 12:49:05 -0400
committerUlrich Drepper <drepper@gmail.com>2010-10-19 12:49:05 -0400
commitd20501241ea423e477b357d93147530987e0d89e (patch)
treed3f6778111be8ffde5964e2c2903a8b6fe697cdf /bits
parent6ce0bb748d7de856cb2076b41625fe7cedac5e16 (diff)
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Add C99 FP_FAST_FMA{,F,L} macros to math.h
Diffstat (limited to 'bits')
-rw-r--r--bits/mathdef.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/bits/mathdef.h b/bits/mathdef.h
index 00c67241a0..973438097e 100644
--- a/bits/mathdef.h
+++ b/bits/mathdef.h
@@ -34,6 +34,20 @@ typedef double double_t;	/* `double' expressions are evaluated as
 # define FP_ILOGB0	(-2147483647)
 # define FP_ILOGBNAN	2147483647
 
+/* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
+   builtins are supported.  */
+#if __FP_FAST_FMA
+# define FP_FAST_FMA 1
+#endif
+
+#if __FP_FAST_FMAF
+# define FP_FAST_FMAF 1
+#endif
+
+#if __FP_FAST_FMAL
+# define FP_FAST_FMAL 1
+#endif
+
 #endif	/* ISO C99 */
 
 #ifndef __NO_LONG_DOUBLE_MATH