| #include <math.h> | |
| #include <limits.h> | |
| #include <errno.h> | |
| long | |
| lroundf (float x) | |
| { | |
| /* Add +/- 0.5, then round towards zero. */ | |
| float tmp = truncf (x + (x >= 0.0F ? 0.5F : -0.5F)); | |
| if (!isfinite (tmp) | |
| || tmp > (float)LONG_MAX | |
| || tmp < (float)LONG_MIN) | |
| { | |
| errno = ERANGE; | |
| /* Undefined behaviour, so we could return anything. */ | |
| /* return tmp > 0.0F ? LONG_MAX : LONG_MIN; */ | |
| } | |
| return (long)tmp; | |
| } |