COPYSIGN(3) BSD Library Functions Manual COPYSIGN(3)NAMEcopysign — changes the sign of x to that of y
SYNOPSIS
#include <math.h>
double
copysign(double x, double y);
float
copysignf(float x, float y);
DESCRIPTION
The copysign() and copysignf() functions return x with its sign changed
to y's.
SPECIAL VALUES
copysign(x, y) returns a NaN (with y's sign) if x is a NaN.
STANDARDS
The copysign() and copysignf() functions conform to ISO/IEC 9899:1999(E).
BSD July 2, 2003 BSD