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

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Revision 82 - (hide annotations)
Tue Oct 26 06:53:54 2004 UTC (15 years, 4 months ago) by jgs
Original Path: trunk/esys2/finley/src/finleyC/Assemble_RHSMatrix_Single.c
File MIME type: text/plain
File size: 2577 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_i)_i + Y */
12    
13     /* Shape of the coefficients: */
14    
15     /* X = numDim */
16     /* Y = 1 */
17    
18     /**************************************************************/
19    
20     /* Copyrights by ACcESS Australia, 2003 */
21     /* author: gross@access.edu.au */
22     /* Version: $Id$ */
23    
24     /**************************************************************/
25    
26     #include "Common.h"
27    
28     /**************************************************************/
29    
30     void Finley_Assemble_RHSMatrix_Single(int NS,int numDim,int numQuad,
31     double* S,double* DSDX,double* Vol,
32     int NN, double* EM_F,
33     double* X, int extendedX,
34     double* Y, int extendedY) {
35     int s,q,i;
36     double rtmp;
37    
38     for (s=0;s<NS;s++) {
39     /**************************************************************/
40     /* process X: */
41     /**************************************************************/
42     if (NULL!=X) {
43     if (extendedX) {
44     for (i=0;i<numDim;i++) {
45     for (q=0;q<numQuad;q++) {
46     EM_F[INDEX2(0,s,1)]+=Vol[q]*DSDX[INDEX3(s,i,q,NS,numDim)]*X[INDEX2(i,q,numDim)];
47     }
48     }
49     } else {
50     for (i=0;i<numDim;i++) {
51     if (X[i]!=0.) {
52     rtmp=0;
53     for (q=0;q<numQuad;q++) rtmp+=Vol[q]*DSDX[INDEX3(s,i,q,NS,numDim)];
54     EM_F[INDEX2(0,s,1)]+=rtmp*X[i];
55     }
56     }
57     }
58     }
59     /**************************************************************/
60     /* process Y: */
61     /**************************************************************/
62     if (NULL!=Y) {
63     if (extendedY) {
64     for (q=0;q<numQuad;q++) EM_F[INDEX2(0,s,1)]+=Vol[q]*S[INDEX2(s,q,NS)]*Y[q];
65     } else {
66     if (Y[0]!=0.) {
67     rtmp=0;
68     for (q=0;q<numQuad;q++) rtmp+=Vol[q]*S[INDEX2(s,q,NS)];
69     EM_F[INDEX2(0,s,1)]+=rtmp*Y[0];
70     }
71     }
72     }
73     }
74     }
75    
76     /*
77     * $Log$
78     * Revision 1.1 2004/10/26 06:53:57 jgs
79     * Initial revision
80     *
81     * Revision 1.2 2004/07/30 04:37:06 gross
82     * escript and finley are linking now and RecMeshTest.py has been passed
83     *
84     * Revision 1.1 2004/07/02 04:21:13 gross
85     * Finley C code has been included
86     *
87     *
88     */

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