TRUNC(3)

NAME
trunc, truncf, truncl - nearest integral value with magnitude less than or equal to |x|

LIBRARY
libm

SYNOPSIS
#include <math.h>
double
trunc(double x);
float
truncf(float x);
long double
truncl(long double x);

DESCRIPTION
The trunc(), truncf(), and truncl() functions return the nearest integral value with magnitude less than or equal to |x|. They are equivalent to rint(), rintf(), and rintl(), respectively, in the FE_TOWARDZERO rounding mode.

SEE ALSO
ceil(3), fesetround(3), floor(3), math(3), nextafter(3), rint(3), round(3)

STANDARDS
The trunc(), truncf(), and truncl() functions conform to isoC-99.

HISTORY
These routines first appeared in FreeBSD 5.3.