xref: /petsc/src/vec/is/tests/ex1.c (revision b122ec5aa1bd4469eb4e0673542fb7de3f411254)
1c4762a1bSJed Brown 
2c4762a1bSJed Brown static char help[]= "Tests ISLocalToGlobalMappingCreateIS() for bs > 1.\n\n";
3c4762a1bSJed Brown 
4c4762a1bSJed Brown #include <petscis.h>
5c4762a1bSJed Brown #include <petscviewer.h>
6c4762a1bSJed Brown 
7c4762a1bSJed Brown int main(int argc,char **argv)
8c4762a1bSJed Brown {
9c4762a1bSJed Brown   PetscInt               bs = 2,n = 3,ix[3] = {1,7,9},iy[2] = {0,2},mp[2];
10c4762a1bSJed Brown   IS                     isx;
11c4762a1bSJed Brown   ISLocalToGlobalMapping ltog;
12c4762a1bSJed Brown 
13*b122ec5aSJacob Faibussowitsch   CHKERRQ(PetscInitialize(&argc,&argv,(char*)0,help));
14c4762a1bSJed Brown 
155f80ce2aSJacob Faibussowitsch   CHKERRQ(ISCreateBlock(PETSC_COMM_SELF,bs,n,ix,PETSC_COPY_VALUES,&isx));
165f80ce2aSJacob Faibussowitsch   CHKERRQ(ISLocalToGlobalMappingCreateIS(isx,&ltog));
17c4762a1bSJed Brown 
185f80ce2aSJacob Faibussowitsch   CHKERRQ(PetscIntView(2,iy,PETSC_VIEWER_STDOUT_WORLD));
195f80ce2aSJacob Faibussowitsch   CHKERRQ(ISLocalToGlobalMappingApply(ltog,2,iy,mp));
205f80ce2aSJacob Faibussowitsch   CHKERRQ(PetscIntView(2,mp,PETSC_VIEWER_STDOUT_WORLD));
21c4762a1bSJed Brown 
225f80ce2aSJacob Faibussowitsch   CHKERRQ(PetscIntView(2,iy,PETSC_VIEWER_STDOUT_WORLD));
235f80ce2aSJacob Faibussowitsch   CHKERRQ(ISLocalToGlobalMappingApplyBlock(ltog,2,iy,mp));
245f80ce2aSJacob Faibussowitsch   CHKERRQ(PetscIntView(2,mp,PETSC_VIEWER_STDOUT_WORLD));
25c4762a1bSJed Brown 
265f80ce2aSJacob Faibussowitsch   CHKERRQ(ISLocalToGlobalMappingDestroy(&ltog));
275f80ce2aSJacob Faibussowitsch   CHKERRQ(ISDestroy(&isx));
28c4762a1bSJed Brown 
29*b122ec5aSJacob Faibussowitsch   CHKERRQ(PetscFinalize());
30*b122ec5aSJacob Faibussowitsch   return 0;
31c4762a1bSJed Brown }
32c4762a1bSJed Brown 
33c4762a1bSJed Brown /*TEST
34c4762a1bSJed Brown 
35c4762a1bSJed Brown    test:
36c4762a1bSJed Brown 
37c4762a1bSJed Brown TEST*/
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