xref: /petsc/src/vec/is/tests/ex1.c (revision 5f80ce2ab25dff0f4601e710601cbbcecf323266)
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2c4762a1bSJed Brown static char help[]= "Tests ISLocalToGlobalMappingCreateIS() for bs > 1.\n\n";
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4c4762a1bSJed Brown #include <petscis.h>
5c4762a1bSJed Brown #include <petscviewer.h>
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7c4762a1bSJed Brown int main(int argc,char **argv)
8c4762a1bSJed Brown {
9c4762a1bSJed Brown   PetscErrorCode         ierr;
10c4762a1bSJed Brown   PetscInt               bs = 2,n = 3,ix[3] = {1,7,9},iy[2] = {0,2},mp[2];
11c4762a1bSJed Brown   IS                     isx;
12c4762a1bSJed Brown   ISLocalToGlobalMapping ltog;
13c4762a1bSJed Brown 
14c4762a1bSJed Brown   ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr;
15c4762a1bSJed Brown 
16*5f80ce2aSJacob Faibussowitsch   CHKERRQ(ISCreateBlock(PETSC_COMM_SELF,bs,n,ix,PETSC_COPY_VALUES,&isx));
17*5f80ce2aSJacob Faibussowitsch   CHKERRQ(ISLocalToGlobalMappingCreateIS(isx,&ltog));
18c4762a1bSJed Brown 
19*5f80ce2aSJacob Faibussowitsch   CHKERRQ(PetscIntView(2,iy,PETSC_VIEWER_STDOUT_WORLD));
20*5f80ce2aSJacob Faibussowitsch   CHKERRQ(ISLocalToGlobalMappingApply(ltog,2,iy,mp));
21*5f80ce2aSJacob Faibussowitsch   CHKERRQ(PetscIntView(2,mp,PETSC_VIEWER_STDOUT_WORLD));
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23*5f80ce2aSJacob Faibussowitsch   CHKERRQ(PetscIntView(2,iy,PETSC_VIEWER_STDOUT_WORLD));
24*5f80ce2aSJacob Faibussowitsch   CHKERRQ(ISLocalToGlobalMappingApplyBlock(ltog,2,iy,mp));
25*5f80ce2aSJacob Faibussowitsch   CHKERRQ(PetscIntView(2,mp,PETSC_VIEWER_STDOUT_WORLD));
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27*5f80ce2aSJacob Faibussowitsch   CHKERRQ(ISLocalToGlobalMappingDestroy(&ltog));
28*5f80ce2aSJacob Faibussowitsch   CHKERRQ(ISDestroy(&isx));
29c4762a1bSJed Brown 
30c4762a1bSJed Brown   ierr = PetscFinalize();
31c4762a1bSJed Brown   return ierr;
32c4762a1bSJed Brown }
33c4762a1bSJed Brown 
34c4762a1bSJed Brown /*TEST
35c4762a1bSJed Brown 
36c4762a1bSJed Brown    test:
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38c4762a1bSJed Brown TEST*/
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