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 equiva-
lent 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.
BSD
April 16, 2005 BSD
