trunc, truncf, truncl - round to truncated integer value

Definition	#include <math.h> double trunc(double x); (C11) float truncf(float x); (C11) long double truncl(long double x); (C11) These functions round their argument to the integer value, in floating format, nearest to but no larger in magnitude than the argum.
Return val.	Integer part of x with the sign of x.
See also	frexp, ldexp, modf