TRUNC(3) Library Functions Manual TRUNC(3)
NAME
trunc, truncfnearest 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);
DESCRIPTION
The trunc() and truncf() functions return the nearest integral value with magnitude less than or equal to |x|. They are equivalent to rint() and rintf() respectively, in the FP_RZ rounding mode.
SEE ALSO
STANDARDS
The trunc() and truncf() functions conform to ISO/IEC 9899:1999 (“ISO C99”).