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Diffstat (limited to 'src/math/isnan.h')
| -rw-r--r-- | src/math/isnan.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/math/isnan.h b/src/math/isnan.h new file mode 100644 index 00000000..80bbb741 --- /dev/null +++ b/src/math/isnan.h @@ -0,0 +1,9 @@ +#include <math.h> + +#define isnan(__x) (fpclassify(__x) == FP_NAN) + +/* +STDC(199901) +LINK(m) +see also SUSv1 +*/ |