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TRUNC(3)                 BSD 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 FP_RZ rounding mode.

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

STANDARDS
     The trunc(), truncf(), and truncl() functions conform to ISO/IEC
     9899:1999 (``ISO C99'').

BSD                            November 13, 2013                           BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | STANDARDS