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copysign

   Returns x with the same sign as y.

   This function is supported on OpenVMS Integrity servers and
   Alpha only.

   Format

     #include  <math.h>

     double copysign  (double x, double y);

     float copysignf  (float x, float y);

                      (Integrity servers, Alpha)

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

                            (Integrity servers, Alpha)

Additional information available:

Arguments       Description     Return_Value