TRUNC(3) |
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.
STANDARDS
The trunc(), truncf(), and truncl() functions conform to ISO/IEC 9899:1999 (“ISO C99”).