]>
Commit | Line | Data |
---|---|---|
fe4da5cc | 1 | * |
2 | * $Id$ | |
3 | * | |
4 | * $Log$ | |
5 | * Revision 1.1.1.1 1995/10/24 10:21:57 cernlib | |
6 | * Geant | |
7 | * | |
8 | * | |
9 | #include "geant321/pilot.h" | |
10 | *CMZ : 3.21/04 23/02/95 14.46.01 by S.Giani | |
11 | *-- Author : | |
12 | SUBROUTINE INTERP(X,Y,X1,Y1,X2,Y2,INT) | |
13 | C THIS ROUTINE PERFORMS THE INTERPOLATION ACCORDING | |
14 | C TO THE ENDF/B INTERPOLATION SCHEME INT | |
15 | #include "geant321/minput.inc" | |
16 | SAVE | |
17 | IF(INT.LT.1.OR.INT.GT.5)GO TO 60 | |
18 | IF(X2.EQ.X1)GO TO 10 | |
19 | GO TO (10,20,30,40,50),INT | |
20 | 10 Y=Y1 | |
21 | RETURN | |
22 | 20 Y=Y1+(X-X1)*(Y2-Y1)/(X2-X1) | |
23 | RETURN | |
24 | 30 IF(X1.EQ.0.0.OR.X2.EQ.0.0)GO TO 20 | |
25 | Y=Y1+ALOG(X/X1)*(Y2-Y1)/ALOG(X2/X1) | |
26 | RETURN | |
27 | 40 IF(Y1.EQ.0.0.OR.Y2.EQ.0.0)GO TO 20 | |
28 | Y=Y1*EXP((X-X1)*ALOG(Y2/Y1)/(X2-X1)) | |
29 | RETURN | |
30 | 50 IF(Y1.EQ.0.0.OR.Y2.EQ.0.0)GO TO 30 | |
31 | IF(X1.EQ.0.0.OR.X2.EQ.0.0)GO TO 40 | |
32 | Y=Y1*EXP(ALOG(X/X1)*ALOG(Y2/Y1)/ALOG(X2/X1)) | |
33 | RETURN | |
34 | 60 WRITE(IOUT,10000)INT | |
35 | 10000 FORMAT(' MICAP: INTERP-INVALID INTERPOLATION SCHEME',I11) | |
36 | WRITE(6,*) ' CALOR: ERROR in INTERP ====> STOP ' | |
37 | STOP | |
38 | END |