/[escript]/trunk/finley/src/finley/Assemble_RHSMatrix_System.c
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Annotation of /trunk/finley/src/finley/Assemble_RHSMatrix_System.c

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Revision 82 - (hide annotations)
Tue Oct 26 06:53:54 2004 UTC (15 years, 7 months ago) by jgs
Original Path: trunk/esys2/finley/src/finleyC/Assemble_RHSMatrix_System.c
File MIME type: text/plain
File size: 3081 byte(s)
Initial revision

1 jgs 82 /* $Id$ */
2    
3     /**************************************************************/
4    
5     /* Updates the element matrices: */
6    
7     /* assembles the system of numEq components right hand side F */
8    
9     /* -div X + Y */
10    
11     /* -(X_{k,i})_i + Y_k */
12    
13     /* Shape of the coefficients: */
14    
15     /* X = numEqu x numDim */
16     /* Y = numEqu */
17    
18    
19     /**************************************************************/
20    
21     /* Copyrights by ACcESS Australia, 2003 */
22     /* author: gross@access.edu.au */
23     /* Version: $Id$ */
24    
25     /**************************************************************/
26    
27     #include "Common.h"
28    
29     /**************************************************************/
30    
31     void Finley_Assemble_RHSMatrix_System(int NS,int numDim,int numQuad,int numEqu,
32     double* S,double* DSDX,double* Vol,
33     int NN, double* EM_F,
34     double* X, int extendedX,
35     double* Y, int extendedY) {
36     int s,k,q,i;
37     double rtmp;
38    
39     /**************************************************************/
40     /* process X: */
41     /**************************************************************/
42     if (NULL!=X) {
43     if (extendedX) {
44     for (s=0;s<NS;s++) {
45     for (k=0;k<numEqu;k++) {
46     for (i=0;i<numDim;i++) {
47     for (q=0;q<numQuad;q++) {
48     EM_F[INDEX2(k,s,numEqu)]+=Vol[q]*DSDX[INDEX3(s,i,q,NS,numDim)]*X[INDEX3(k,i,q,numEqu,numDim)];
49     }
50     }
51     }
52     }
53     } else {
54     for (s=0;s<NS;s++) {
55     for (i=0;i<numDim;i++) {
56     rtmp=0;
57     for (q=0;q<numQuad;q++) rtmp+=Vol[q]*DSDX[INDEX3(s,i,q,NS,numDim)];
58     for (k=0;k<numEqu;k++) EM_F[INDEX2(k,s,numEqu)]+=rtmp*X[INDEX2(k,i,numEqu)];
59     }
60     }
61     }
62     }
63     /**************************************************************/
64     /* process Y: */
65     /**************************************************************/
66     if (NULL!=Y) {
67     if (extendedY) {
68     for (s=0;s<NS;s++) {
69     for (k=0;k<numEqu;k++) {
70     for (q=0;q<numQuad;q++) EM_F[INDEX2(k,s,numEqu)]+=Vol[q]*S[INDEX2(s,q,NS)]*Y[INDEX2(k,q,numEqu)];
71     }
72     }
73     } else {
74     for (s=0;s<NS;s++) {
75     rtmp=0;
76     for (q=0;q<numQuad;q++) rtmp+=Vol[q]*S[INDEX2(s,q,NS)];
77     for (k=0;k<numEqu;k++) EM_F[INDEX2(k,s,numEqu)]+=rtmp*Y[k];
78     }
79     }
80     }
81     }
82    
83     /*
84     * $Log$
85     * Revision 1.1 2004/10/26 06:53:57 jgs
86     * Initial revision
87     *
88     * Revision 1.2 2004/07/30 04:37:06 gross
89     * escript and finley are linking now and RecMeshTest.py has been passed
90     *
91     * Revision 1.1 2004/07/02 04:21:13 gross
92     * Finley C code has been included
93     *
94     *
95     */

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