main
test-branch
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Last change
on this file since bd7a43e was ea777aa, checked in by Alex Wilton <awilton@…>, 3 years ago |
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Moved examples, include, build_default.properties, common.xml, and README out from dev.civl.com into the root of the repo.
git-svn-id: svn://vsl.cis.udel.edu/civl/trunk@5704 fb995dde-84ed-4084-dfe6-e5aef3e2452c
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Property mode
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100644
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File size:
669 bytes
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| [ac5660f] | 1 | /* Commandline execution:
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| [89b55f5] | 2 | * civl verify diffusion.cvl
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| [ac5660f] | 3 | */
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| [9803bc1] | 4 | #include<civlc.cvh>
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| [f28d814] | 5 |
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| [364cc7e] | 6 | int nx;
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| [f28d814] | 7 | $input double u0[2];
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| [364cc7e] | 8 | int nsteps;
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| 9 | double kappa;
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| 10 | double data[3][2];
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| 11 | double u[2];
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| 12 |
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| 13 | void init() {
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| 14 | nx = 2;
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| 15 | nsteps = 2;
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| 16 | kappa = 0.1;
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| 17 | for (int i = 0; i < nx; i++) {
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| 18 | u[i] = u0[i];
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| 19 | }
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| 20 | }
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| 21 |
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| 22 | void write(int time) {
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| 23 | for (int i = 0; i < nx; i++) {
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| 24 | data[time][i] = u[i];
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| 25 | }
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| 26 | }
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| 27 |
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| 28 | void update() {
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| 29 | double u_new[nx];
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| 30 |
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| 31 | for (int i=1; i<nx-1; i++) {
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| 32 | u_new[i] = u[i] + kappa*(u[i+1] + u[i-1] - 2*u[i]);
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| 33 | }
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| 34 | for (int i=1; i<nx-1; i++) {
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| 35 | u[i] = u_new[i];
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| 36 | }
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| 37 | }
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| 38 |
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| 39 | void main() {
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| 40 | init();
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| 41 | write(0);
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| 42 | for (int iter = 1; iter <= nsteps; iter++) {
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| 43 | update();
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| 44 | write(iter);
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| 45 | }
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| 46 | }
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