xref: /petsc/src/mat/tests/ex175.c (revision c4762a1b19cd2af06abeed90e8f9d34fb975dd94)
1*c4762a1bSJed Brown 
2*c4762a1bSJed Brown static char help[] = "Tests MatCreateHermitianTranspose().\n\n";
3*c4762a1bSJed Brown 
4*c4762a1bSJed Brown #include <petscmat.h>
5*c4762a1bSJed Brown 
6*c4762a1bSJed Brown int main(int argc,char **args)
7*c4762a1bSJed Brown {
8*c4762a1bSJed Brown   Mat            C,C_htransposed,Cht,C_empty;
9*c4762a1bSJed Brown   PetscInt       i,j,m = 10,n = 10;
10*c4762a1bSJed Brown   PetscErrorCode ierr;
11*c4762a1bSJed Brown   PetscScalar    v;
12*c4762a1bSJed Brown 
13*c4762a1bSJed Brown   ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr;
14*c4762a1bSJed Brown   /* Create a complex non-hermitian matrix */
15*c4762a1bSJed Brown   ierr = MatCreate(PETSC_COMM_SELF,&C);CHKERRQ(ierr);
16*c4762a1bSJed Brown   ierr = MatSetSizes(C,PETSC_DECIDE,PETSC_DECIDE,m,n);CHKERRQ(ierr);
17*c4762a1bSJed Brown   ierr = MatSetFromOptions(C);CHKERRQ(ierr);
18*c4762a1bSJed Brown   ierr = MatSetUp(C);CHKERRQ(ierr);
19*c4762a1bSJed Brown   for (i=0; i<m; i++) {
20*c4762a1bSJed Brown     for (j=0; j<n; j++) {
21*c4762a1bSJed Brown       v = 0.0 - 1.0*PETSC_i;
22*c4762a1bSJed Brown       if (i>j && i-j<2)   {ierr = MatSetValues(C,1,&i,1,&j,&v,INSERT_VALUES);CHKERRQ(ierr);}
23*c4762a1bSJed Brown     }
24*c4762a1bSJed Brown   }
25*c4762a1bSJed Brown   ierr = MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
26*c4762a1bSJed Brown   ierr = MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
27*c4762a1bSJed Brown 
28*c4762a1bSJed Brown   ierr = MatCreateHermitianTranspose(C, &C_htransposed);CHKERRQ(ierr);
29*c4762a1bSJed Brown 
30*c4762a1bSJed Brown   ierr = MatView(C,PETSC_VIEWER_STDOUT_SELF);CHKERRQ(ierr);
31*c4762a1bSJed Brown   ierr = MatDuplicate(C_htransposed,MAT_COPY_VALUES,&Cht);CHKERRQ(ierr);
32*c4762a1bSJed Brown   ierr = MatView(Cht,PETSC_VIEWER_STDOUT_SELF);CHKERRQ(ierr);
33*c4762a1bSJed Brown   ierr = MatDuplicate(C_htransposed,MAT_DO_NOT_COPY_VALUES,&C_empty);CHKERRQ(ierr);
34*c4762a1bSJed Brown   ierr = MatView(C_empty,PETSC_VIEWER_STDOUT_SELF);CHKERRQ(ierr);
35*c4762a1bSJed Brown 
36*c4762a1bSJed Brown   ierr = MatDestroy(&C);CHKERRQ(ierr);
37*c4762a1bSJed Brown   ierr = MatDestroy(&C_htransposed);CHKERRQ(ierr);
38*c4762a1bSJed Brown   ierr = MatDestroy(&Cht);CHKERRQ(ierr);
39*c4762a1bSJed Brown   ierr = MatDestroy(&C_empty);CHKERRQ(ierr);
40*c4762a1bSJed Brown   ierr = PetscFinalize();
41*c4762a1bSJed Brown   return ierr;
42*c4762a1bSJed Brown }
43*c4762a1bSJed Brown 
44*c4762a1bSJed Brown 
45*c4762a1bSJed Brown 
46*c4762a1bSJed Brown /*TEST
47*c4762a1bSJed Brown 
48*c4762a1bSJed Brown    build:
49*c4762a1bSJed Brown      requires: complex
50*c4762a1bSJed Brown 
51*c4762a1bSJed Brown    test:
52*c4762a1bSJed Brown      output_file: output/ex175.out
53*c4762a1bSJed Brown 
54*c4762a1bSJed Brown TEST*/
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