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math.h revision 1.3 
      1  1.3  kleink /*	$NetBSD: math.h,v 1.3 2000/02/05 14:04:41 kleink Exp $	*/
      2  1.1  kleink 
      3  1.1  kleink /*
      4  1.1  kleink  * ISO C99
      5  1.1  kleink  */
      6  1.3  kleink #if !defined(_ANSI_SOURCE) && \
      7  1.3  kleink     (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) || \
      8  1.3  kleink      defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L)
      9  1.2  kleink extern __const char	__nanf[];
     10  1.2  kleink #define	NAN		(*(__const float *)(__const void *)__nanf)
     11  1.1  kleink #endif
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