copysign(3M)

NAME

copysign − return magnitude of first argument and sign of second argument

cc [ flag ... ] file ... −lm [ library ... ]

#include <math.h>

double copysign(double x, double y);

The copysign() function returns a value with the magnitude of x and the sign of y. It produces a NaN with the sign of y if x is a NaN.

The copysign() function returns a value with the magnitude of x and the sign of y.

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
MT-Level	MT-Safe