qm-dsp
1.8
|
00001 00002 #ifndef NAN_INF_H 00003 #define NAN_INF_H 00004 00005 #define ISNAN(x) (sizeof(x) == sizeof(double) ? ISNANd(x) : ISNANf(x)) 00006 static inline int ISNANf(float x) { return x != x; } 00007 static inline int ISNANd(double x) { return x != x; } 00008 00009 #define ISINF(x) (sizeof(x) == sizeof(double) ? ISINFd(x) : ISINFf(x)) 00010 static inline int ISINFf(float x) { return !ISNANf(x) && ISNANf(x - x); } 00011 static inline int ISINFd(double x) { return !ISNANd(x) && ISNANd(x - x); } 00012 00013 #endif