Mathematical Library Functions                       copysign(3M)



NAME
     copysign, copysignf, copysignl - number  manipulation  func-
     tion

SYNOPSIS
     c99 [ flag... ] file... -lm [ library... ]
     #include 

     double copysign(double x, double y);


     float copysignf(float x, float y);


     long double copysignl(long double x, long double y);


DESCRIPTION
     These functions produce a value with the magnitude of x  and
     the sign of y.

RETURN VALUES
     Upon successful completion, these functions return  a  value
     with the magnitude of x and the sign of y.

ERORS
     No errors are defined.

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface Stability          Standard                    
    
     MT-Level                     MT-Safe                     
    


SEE ALSO
     math.h(3HEAD), signbit(3M),attributes(5), standards(5)










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