#include #include #include 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; }