copysign.c File Reference

#include "../math.h"

Functions
double	copysign (double x, double y)
	Copy sign. More...

Function Documentation

copysign()

double copysign	(	double	x,
		double	y
	)

Copy sign.

The copysign functions produce a value with the magnitude of x and the sign of y. They produce a NaN (with the sign of y) if x is a NaN. On implementations that represent a signed zero but do not treat negative zero consistently in arithmetic operations, the copysign functions regard the sign of zero as positive.

Parameters

x	Value with the magnitude of the resulting value.
y	Value with the sign of the resulting value.

Returns

The copysign functions return a value with the magnitude of x and the sign of y.