DragonFly On-Line Manual Pages
COPYSIGN(3) DragonFly Library Functions 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);
DESCRIPTION
copysign() returns x with its sign changed to y's. The copysignf() func-
tion is a single precision version of copysign(). The copysignl() func-
tion is an extended precision version of copysign().
SEE ALSO
fabs(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.
DragonFly 5.3 June 5, 2013 DragonFly 5.3