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1 *
2 * $Id$
3 *
4 * $Log$
5 * Revision 1.1.1.1  1995/10/24 10:21:54  cernlib
6 * Geant
7 *
8 *
9 #include "geant321/pilot.h"
10 *CMZ :  3.21/02 29/03/94  15.41.48  by  S.Giani
11 *-- Author :
12       SUBROUTINE GTISO(U,V,W)
13 C
14 #include "geant321/crandm.inc"
15 C
16    10 Z = RANDC(ISEED)
17       X = 0.687368 * SFLRAF(Z)
18       Y = 0.687368 * SFLRAF(Z)
19       XSQ = X * X
20       YSQ = Y * Y
21       ZSQ = Z * Z
22       D = XSQ + YSQ + ZSQ
23       IF(D*D-Z) 20 ,20 ,10
24    20 U = 2.0*X*Z/D
25       V = 2.0*Y*Z/D
26       W = (ZSQ-XSQ-YSQ)/D
27       RETURN
28       END