14 lines
455 B
C
14 lines
455 B
C
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#ifndef NAN_INF_H
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#define NAN_INF_H
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#define ISNAN(x) (sizeof(x) == sizeof(double) ? ISNANd(x) : ISNANf(x))
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static inline int ISNANf(float x) { return x != x; }
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static inline int ISNANd(double x) { return x != x; }
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#define ISINF(x) (sizeof(x) == sizeof(double) ? ISINFd(x) : ISINFf(x))
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static inline int ISINFf(float x) { return !ISNANf(x) && ISNANf(x - x); }
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static inline int ISINFd(double x) { return !ISNANd(x) && ISNANd(x - x); }
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#endif
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