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-rw-r--r--bits/mathdef.h9
1 files changed, 0 insertions, 9 deletions
diff --git a/bits/mathdef.h b/bits/mathdef.h
index 050204ab66..014829790a 100644
--- a/bits/mathdef.h
+++ b/bits/mathdef.h
@@ -19,15 +19,6 @@
 # error "Never use <bits/mathdef.h> directly; include <math.h> instead"
 #endif
 
-#if defined  __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
-# define _MATH_H_MATHDEF	1
-
-/* The values returned by `ilogb' for 0 and NaN respectively.  */
-# define FP_ILOGB0	(-2147483647)
-# define FP_ILOGBNAN	2147483647
-
-#endif	/* ISO C99 */
-
 #ifndef __NO_LONG_DOUBLE_MATH
 /* Signal that we do not really have a `long double'.  The disables the
    declaration of all the `long double' function variants.  */