opendarwin man page for copysignf

COPYSIGN(3)						   BSD Library Functions Manual 					       COPYSIGN(3)

NAME
     copysign -- 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