Actual source code: ex1.c
1: static char help[] = "Tests ISLocalToGlobalMappingCreateIS() for bs > 1.\n\n";
3: #include <petscis.h>
4: #include <petscviewer.h>
6: int main(int argc, char **argv)
7: {
8: PetscInt bs = 2, n = 3, ix[3] = {1, 7, 9}, iy[2] = {0, 2}, mp[2];
9: IS isx;
10: ISLocalToGlobalMapping ltog;
12: PetscFunctionBeginUser;
13: PetscCall(PetscInitialize(&argc, &argv, (char *)0, help));
15: PetscCall(ISCreateBlock(PETSC_COMM_SELF, bs, n, ix, PETSC_COPY_VALUES, &isx));
16: PetscCall(ISLocalToGlobalMappingCreateIS(isx, <og));
18: PetscCall(PetscIntView(2, iy, PETSC_VIEWER_STDOUT_WORLD));
19: PetscCall(ISLocalToGlobalMappingApply(ltog, 2, iy, mp));
20: PetscCall(PetscIntView(2, mp, PETSC_VIEWER_STDOUT_WORLD));
22: PetscCall(PetscIntView(2, iy, PETSC_VIEWER_STDOUT_WORLD));
23: PetscCall(ISLocalToGlobalMappingApplyBlock(ltog, 2, iy, mp));
24: PetscCall(PetscIntView(2, mp, PETSC_VIEWER_STDOUT_WORLD));
26: PetscCall(ISLocalToGlobalMappingDestroy(<og));
27: PetscCall(ISDestroy(&isx));
29: PetscCall(PetscFinalize());
30: return 0;
31: }
33: /*TEST
35: test:
37: TEST*/