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1 | * |
| 2 | * $Id$ |
| 3 | * |
| 4 | * $Log$ |
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5 | * Revision 1.4 2000/09/18 10:02:36 hristov |
| 6 | * Makefile added to PDF8 |
| 7 | * |
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8 | * Revision 1.1.1.2 1996/10/30 08:29:15 cernlib |
| 9 | * Version 7.04 |
| 10 | * |
| 11 | * Revision 1.1.1.1 1996/04/12 15:29:29 plothow |
| 12 | * Version 7.01 |
| 13 | * |
| 14 | * |
| 15 | #include "pdf/pilot.h" |
| 16 | SUBROUTINE RXDV (X,QQ,XDV) |
| 17 | C....................................................................... |
| 18 | C. |
| 19 | C. DV |
| 20 | C. |
| 21 | C....................................................................... |
| 22 | #include "pdf/impdp.inc" |
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23 | #if defined(CERNLIB_DOUBLE) |
| 24 | DOUBLE PRECISION |
| 25 | #endif |
| 26 | #if defined(CERNLIB_SINGLE) |
| 27 | REAL |
| 28 | #endif |
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29 | + BBETA |
| 30 | DATA XLAM /0.50D00/, Q0/2.1D0/, Q00/1.8D0/ |
| 31 | DATA ONED/1.D0/, THRED/3.D0/ |
| 32 | IF(QQ.LT.Q0) QQ=Q0 |
| 33 | S=LOG(QQ/XLAM**2)/LOG(Q00/XLAM**2) |
| 34 | S=LOG(S) |
| 35 | ETA3=0.85D00-0.24D00*S |
| 36 | ETA4=3.35D00+0.816D00*S |
| 37 | XDV=(X**ETA3)*((ONED-X)**ETA4)/BBETA(ETA3,ONED+ETA4) |
| 38 | RETURN |
| 39 | END |
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