diff options
Diffstat (limited to 'math/math.h')
| -rw-r--r-- | math/math.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/math/math.h b/math/math.h index 5381f29e9a..d7487dda4a 100644 --- a/math/math.h +++ b/math/math.h @@ -196,6 +196,13 @@ enum : sizeof (x) == sizeof (double) ? \ __isnan (x) : __isnanl (x)) +/* Return nonzero value is X is positive or negative infinity. */ +# define isinf(x) \ + (sizeof (x) == sizeof (float) ? \ + __isinff (x) \ + : sizeof (x) == sizeof (double) ? \ + __isinf (x) : __isinfl (x)) + #endif /* Use ISO C 9X. */ #ifdef __USE_MISC |