TRUNC(3) BSD Library Functions Manual TRUNC(3)NAME
trunc — truncate to integer value
SYNOPSIS
#include <math.h>
double
trunc(double x);
long double
truncl(long double x);
float
truncf(float x);
DESCRIPTION
The trunc() functions return the integral value nearest to but no larger
in magnitude than x.
SPECIAL VALUES
trunc(�0) returns �0.
trunc(�infinity) returns �infinity.
VECTOR OPERATIONS
If you need to apply the trunc() function to SIMD vectors or arrays,
using the following functions provided by the Accelerate.framework may
give significantly better performance:
#include <Accelerate/Accelerate.h>
vFloat vintf(vFloat x);
void vvintf(float *y, const float *x, const int *n);
void vvint(double *y, const double *x, const int *n);
SEE ALSOceil(3), floor(3), round(3), math(3)STANDARDS
The trunc() functions conform to ISO/IEC 9899:2011.
BSD December 11, 2006 BSD