COPYSIGN(3) OpenBSD Programmer's Manual COPYSIGN(3)NAME
copysign, copysignf, copysignl - copy sign
SYNOPSIS
#include <math.h>
double
copysign(double x, double y);
float
copysignf(float x, float y);
long double
copysignl(long double x, long double y);
DESCRIPTIONcopysign() returns x with its sign changed to y's. The copysignf()
function is a single precision version of copysign(). The copysignl()
function is an extended precision version of copysign().
SEE ALSOmath(3)STANDARDS
IEEE Std 754-1985
HISTORY
The copysign, copysignf and copysignl functions appeared in 4.3BSD,
NetBSD 1.1 and OpenBSD 4.5, respectively.
OpenBSD 4.9 July 29, 2009 OpenBSD 4.9