5 * Revision 1.1.1.2 1996/10/30 08:28:30 cernlib
8 * Revision 1.1.1.1 1996/04/12 15:29:22 plothow
12 #include "pdf/pilot.h"
15 C STRUCTURE FUNCTION ANTIQUARK FROM A PROTON
18 IF (ASQ.GT.0.) SI=SQ/ABS(SQ)
19 A=0.25+0.088*SI*ASQ**1.3
20 B=0.8128*SQ-2.003*SI*ASQ**1.8+0.0831*SQ**2
25 GHRXI=A*(1.0+B*Y+C*Y**2)*(1.0-Y)**D+E* EXP(-F*Y)