xref: /petsc/src/vec/is/tests/ex1.c (revision c4762a1b19cd2af06abeed90e8f9d34fb975dd94)
1*c4762a1bSJed Brown 
2*c4762a1bSJed Brown static char help[]= "Tests ISLocalToGlobalMappingCreateIS() for bs > 1.\n\n";
3*c4762a1bSJed Brown 
4*c4762a1bSJed Brown #include <petscis.h>
5*c4762a1bSJed Brown #include <petscviewer.h>
6*c4762a1bSJed Brown 
7*c4762a1bSJed Brown int main(int argc,char **argv)
8*c4762a1bSJed Brown {
9*c4762a1bSJed Brown   PetscErrorCode         ierr;
10*c4762a1bSJed Brown   PetscInt               bs = 2,n = 3,ix[3] = {1,7,9},iy[2] = {0,2},mp[2];
11*c4762a1bSJed Brown   IS                     isx;
12*c4762a1bSJed Brown   ISLocalToGlobalMapping ltog;
13*c4762a1bSJed Brown 
14*c4762a1bSJed Brown   ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr;
15*c4762a1bSJed Brown 
16*c4762a1bSJed Brown   ierr = ISCreateBlock(PETSC_COMM_SELF,bs,n,ix,PETSC_COPY_VALUES,&isx);CHKERRQ(ierr);
17*c4762a1bSJed Brown   ierr = ISLocalToGlobalMappingCreateIS(isx,&ltog);CHKERRQ(ierr);
18*c4762a1bSJed Brown 
19*c4762a1bSJed Brown   ierr = PetscIntView(2,iy,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
20*c4762a1bSJed Brown   ierr = ISLocalToGlobalMappingApply(ltog,2,iy,mp);CHKERRQ(ierr);
21*c4762a1bSJed Brown   ierr = PetscIntView(2,mp,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
22*c4762a1bSJed Brown 
23*c4762a1bSJed Brown   ierr = PetscIntView(2,iy,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
24*c4762a1bSJed Brown   ierr = ISLocalToGlobalMappingApplyBlock(ltog,2,iy,mp);CHKERRQ(ierr);
25*c4762a1bSJed Brown   ierr = PetscIntView(2,mp,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
26*c4762a1bSJed Brown 
27*c4762a1bSJed Brown   ierr = ISLocalToGlobalMappingDestroy(&ltog);CHKERRQ(ierr);
28*c4762a1bSJed Brown   ierr = ISDestroy(&isx);CHKERRQ(ierr);
29*c4762a1bSJed Brown 
30*c4762a1bSJed Brown   ierr = PetscFinalize();
31*c4762a1bSJed Brown   return ierr;
32*c4762a1bSJed Brown }
33*c4762a1bSJed Brown 
34*c4762a1bSJed Brown 
35*c4762a1bSJed Brown 
36*c4762a1bSJed Brown /*TEST
37*c4762a1bSJed Brown 
38*c4762a1bSJed Brown    test:
39*c4762a1bSJed Brown 
40*c4762a1bSJed Brown TEST*/
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