TRUNC(3)               FreeBSD Library Functions Manual               TRUNC(3)

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

LIBRARY
     Math Library (libm, -lm)

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 ISO/IEC
     9899:1999 ("ISO C99").

HISTORY
     These routines first appeared in FreeBSD 5.3.

FreeBSD 13.1-RELEASE-p6         April 16, 2005         FreeBSD 13.1-RELEASE-p6