5 * Revision 1.1.1.1 1995/10/24 10:20:59 cernlib
9 #include "geant321/pilot.h"
10 *CMZ : 3.21/02 29/03/94 15.41.38 by S.Giani
14 C *** NVE 16-MAR-1988 CERN GENEVA ***
17 C ORIGIN : H.FESEFELDT (27-OCT-1983)
19 C GPDK = SQRT(A*A+(B*B-C*C)**2/(A*A) - 2.0*(B*B+C*C))/2.0
26 ARG=A2+(B2-C2)**2/A2-2.0*(B2+C2)
31 GPDK = 0.5*SQRT(ABS(A2 + (B2-C2)**2/A2 - 2.0*(B2+C2)))