trunc, truncf, truncl - round to interger, towards zero
#include <math.h>
double trunc(double x);
float truncf(float x);
long double truncl(long double x);
These functions round x to the nearest integer not larger
in absolute value.
The rounded integer value. If x is integral, infinite or
NaN, x itself is returned.
None.
C99.
ceil(3), floor(3), lrint(3), nearbyint(3), rint(3),
round(3)