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);
DESCRIPTION
copysign()
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 ALSO
STANDARDS
IEEE Std 754-1985
HISTORY
The copysign,
copysignf and copysignl
functions appeared in 4.3BSD,
NetBSD 1.1 and OpenBSD 4.5,
respectively.