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use __builtin_nanf with gcc and clang.

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Campbell Barton 2013-08-13 10:40:23 +00:00
parent a8d1c893e8
commit 5096beb4a5
1 changed files with 5 additions and 1 deletions
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6
source/blender/blenlib/BLI_math_base.h
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@ -80,9 +80,13 @@
#define MAXFLOAT ((float)3.40282347e+38)
#endif
#if defined(__GNUC__)
# define NAN_FLT __builtin_nanf("")
#else
/* evil quiet NaN definition */
static const int NAN_INT = 0x7FC00000;
#define NAN_FLT *((float *)(&NAN_INT))
# define NAN_FLT (*((float *)(&NAN_INT)))
#endif
/* do not redefine functions from C99 or POSIX.1-2001 */
#if !(defined(_ISOC99_SOURCE) || (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L))