| Revision: | 1.1 |
| Committed: | Wed Sep 17 04:01:49 2008 UTC (16 years, 7 months ago) by loizides |
| Branch: | MAIN |
| CVS Tags: | Mit_032, Mit_031, Mit_025c_branch2, Mit_025c_branch1, Mit_030, Mit_029c, Mit_030_pre1, Mit_029a, Mit_029, Mit_029_pre1, Mit_028a, Mit_025c_branch0, Mit_028, Mit_027a, Mit_027, Mit_026, Mit_025e, Mit_025d, Mit_025c, Mit_025b, Mit_025a, Mit_025, Mit_025pre2, Mit_024b, Mit_025pre1, Mit_024a, Mit_024, Mit_023, Mit_022a, Mit_022, Mit_020d, TMit_020d, Mit_020c, Mit_021, Mit_021pre2, Mit_021pre1, Mit_020b, Mit_020a, Mit_020, Mit_020pre1, Mit_018, Mit_017, Mit_017pre3, Mit_017pre2, Mit_017pre1, V07-05-00, Mit_016, Mit_015b, Mit_015a, Mit_015, Mit_014e, Mit_014d, Mit_014c, Mit_014b, ConvRejection-10-06-09, Mit_014a, Mit_014, Mit_014pre3, Mit_014pre2, Mit_014pre1, Mit_013d, Mit_013c, Mit_013b, Mit_013a, Mit_013, Mit_013pre1, Mit_012i, Mit_012g, Mit_012f, Mit_012e, Mit_012d, Mit_012c, Mit_012b, Mit_012a, Mit_012, Mit_011a, Mit_011, Mit_010a, Mit_010, Mit_009c, Mit_009b, Mit_009a, Mit_009, Mit_008, Mit_008pre2, Mit_008pre1, Mit_006b, Mit_006a, Mit_006, Mit_005, Mit_004, HEAD |
| Branch point for: | Mit_025c_branch |
| Log Message: | Moved MitVertex contents to MitCommon. MitVertex therefore is obsolute and should not be touched anymore. |
| # | User | Rev | Content |
|---|---|---|---|
| 1 | loizides | 1.1 | c $Id: dfinv.F,v 1.1 2008/07/28 11:31:56 paus Exp $ |
| 2 | |||
| 3 | * Inital version of CMS port of CTVMFT (CDF vertex fitter). | ||
| 4 | |||
| 5 | SUBROUTINE DFINV(N,A,IDIM,IR) | ||
| 6 | INTEGER IR(*) | ||
| 7 | DOUBLE PRECISION A(IDIM,*),ZERO, X, Y, TI | ||
| 8 | DOUBLE PRECISION S31, S32, S33, S34, DOTF | ||
| 9 | CHARACTER*6 HNAME | ||
| 10 | DATA HNAME / ' DFINV' / | ||
| 11 | DOTF(X,Y,S31) = X*Y + S31 | ||
| 12 | DATA ZERO / 0.D0 / | ||
| 13 | |||
| 14 | IF(IDIM .GE. N .AND. N .GT. 0) GOTO 310 | ||
| 15 | WRITE(*,'(A)') ' ERROR -- DIMENSIONS ' | ||
| 16 | *** CALL TMPRNT(HNAME,N,IDIM,0) | ||
| 17 | RETURN | ||
| 18 | 310 IF(N .EQ. 1) RETURN | ||
| 19 | A(2,1) = -A(2,2) * DOTF(A(1,1),A(2,1),ZERO) | ||
| 20 | A(1,2) = -A(1,2) | ||
| 21 | IF(N .EQ. 2) GOTO 330 | ||
| 22 | DO 314 I = 3, N | ||
| 23 | IM2 = I-2 | ||
| 24 | DO 312 J = 1, IM2 | ||
| 25 | S31 = ZERO | ||
| 26 | S32 = A(J,I) | ||
| 27 | DO 311 K = J, IM2 | ||
| 28 | S31 = DOTF(A(K,J),A(I,K),S31) | ||
| 29 | S32 = DOTF(A(J,K+1),A(K+1,I),S32) | ||
| 30 | 311 CONTINUE | ||
| 31 | A(I,J) = -A(I,I) * DOTF(A(I-1,J),A(I,I-1),S31) | ||
| 32 | A(J,I) = -S32 | ||
| 33 | 312 CONTINUE | ||
| 34 | A(I,I-1) = -A(I,I) * DOTF(A(I-1,I-1),A(I,I-1),ZERO) | ||
| 35 | A(I-1,I) = -A(I-1,I) | ||
| 36 | 314 CONTINUE | ||
| 37 | 330 NM1 = N-1 | ||
| 38 | DO 335 I = 1, NM1 | ||
| 39 | NMI = N-I | ||
| 40 | DO 332 J = 1, I | ||
| 41 | S33 = A(I,J) | ||
| 42 | DO 331 K = 1, NMI | ||
| 43 | S33 = DOTF(A(I+K,J),A(I,I+K),S33) | ||
| 44 | 331 CONTINUE | ||
| 45 | A(I,J) = S33 | ||
| 46 | 332 CONTINUE | ||
| 47 | DO 334 J = 1, NMI | ||
| 48 | S34 = ZERO | ||
| 49 | DO 333 K = J, NMI | ||
| 50 | S34 = DOTF(A(I+K,I+J),A(I,I+K),S34) | ||
| 51 | 333 CONTINUE | ||
| 52 | A(I,I+J) = S34 | ||
| 53 | 334 CONTINUE | ||
| 54 | 335 CONTINUE | ||
| 55 | NXCH = IR(N) | ||
| 56 | IF(NXCH .EQ. 0) RETURN | ||
| 57 | DO 342 M = 1, NXCH | ||
| 58 | K = NXCH - M+1 | ||
| 59 | IJ = IR(K) | ||
| 60 | I = IJ / 4096 | ||
| 61 | J = MOD(IJ,4096) | ||
| 62 | DO 341 K = 1, N | ||
| 63 | TI = A(K,I) | ||
| 64 | A(K,I) = A(K,J) | ||
| 65 | A(K,J) = TI | ||
| 66 | 341 CONTINUE | ||
| 67 | 342 CONTINUE | ||
| 68 | |||
| 69 | RETURN | ||
| 70 | END |