NAME

trunc, truncf, truncl - round to integer, towards zero

SYNOPSIS

#include <math.h>

double trunc(double x);

float truncf(float x);

long double truncl(long double x);

Link with -lm.

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

trunc(), truncf(), truncl(): _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or cc -std=c99

DESCRIPTION

These functions round x to the nearest integer not larger in absolute value.

RETURN VALUE

The rounded integer value. If x is integral, infinite or NaN, x itself is returned.

ERRORS

None.

CONFORMING TO

C99.

SEE ALSO

ceil(3), floor(3), lrint(3), nearbyint(3), rint(3), round(3)