xref: /petsc/src/vec/is/tests/ex1.c (revision 732aec7a18f2199fb53bb9a2f3aef439a834ce31)
1c4762a1bSJed Brown static char help[] = "Tests ISLocalToGlobalMappingCreateIS() for bs > 1.\n\n";
2c4762a1bSJed Brown 
3c4762a1bSJed Brown #include <petscis.h>
4c4762a1bSJed Brown #include <petscviewer.h>
5c4762a1bSJed Brown 
6d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv)
7d71ae5a4SJacob Faibussowitsch {
8c4762a1bSJed Brown   PetscInt               bs = 2, n = 3, ix[3] = {1, 7, 9}, iy[2] = {0, 2}, mp[2];
9c4762a1bSJed Brown   IS                     isx;
10c4762a1bSJed Brown   ISLocalToGlobalMapping ltog;
11c4762a1bSJed Brown 
12327415f7SBarry Smith   PetscFunctionBeginUser;
13*c8025a54SPierre Jolivet   PetscCall(PetscInitialize(&argc, &argv, NULL, help));
14c4762a1bSJed Brown 
159566063dSJacob Faibussowitsch   PetscCall(ISCreateBlock(PETSC_COMM_SELF, bs, n, ix, PETSC_COPY_VALUES, &isx));
169566063dSJacob Faibussowitsch   PetscCall(ISLocalToGlobalMappingCreateIS(isx, &ltog));
17c4762a1bSJed Brown 
189566063dSJacob Faibussowitsch   PetscCall(PetscIntView(2, iy, PETSC_VIEWER_STDOUT_WORLD));
199566063dSJacob Faibussowitsch   PetscCall(ISLocalToGlobalMappingApply(ltog, 2, iy, mp));
209566063dSJacob Faibussowitsch   PetscCall(PetscIntView(2, mp, PETSC_VIEWER_STDOUT_WORLD));
21c4762a1bSJed Brown 
229566063dSJacob Faibussowitsch   PetscCall(PetscIntView(2, iy, PETSC_VIEWER_STDOUT_WORLD));
239566063dSJacob Faibussowitsch   PetscCall(ISLocalToGlobalMappingApplyBlock(ltog, 2, iy, mp));
249566063dSJacob Faibussowitsch   PetscCall(PetscIntView(2, mp, PETSC_VIEWER_STDOUT_WORLD));
25c4762a1bSJed Brown 
269566063dSJacob Faibussowitsch   PetscCall(ISLocalToGlobalMappingDestroy(&ltog));
279566063dSJacob Faibussowitsch   PetscCall(ISDestroy(&isx));
28c4762a1bSJed Brown 
299566063dSJacob Faibussowitsch   PetscCall(PetscFinalize());
30b122ec5aSJacob Faibussowitsch   return 0;
31c4762a1bSJed Brown }
32c4762a1bSJed Brown 
33c4762a1bSJed Brown /*TEST
34c4762a1bSJed Brown 
35c4762a1bSJed Brown    test:
36c4762a1bSJed Brown 
37c4762a1bSJed Brown TEST*/
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