copysign
Description:
Returns a value whose absolute value matches that of x, but whose sign bit matches that of y.
Note: 
      
        
    
    Remember to link the math library: valac -X -lm ... 
If x is a double.NAN, then a Nan with the sign bit of y is
      returned.
Parameters:
| x | 
           A numeric value.  | 
      
| y | 
           A numeric value.  | 
      
Namespace: GLib.Math
  
  Package: glib-2.0