Actual source code: ex175.c

  1: static char help[] = "Tests MatCreateHermitianTranspose().\n\n";

  3: #include <petscmat.h>

  5: int main(int argc, char **args)
  6: {
  7:   Mat         C, C_htransposed, Cht, C_empty;
  8:   PetscInt    i, j, m = 10, n = 10;
  9:   PetscScalar v;

 11:   PetscFunctionBeginUser;
 12:   PetscCall(PetscInitialize(&argc, &args, (char *)0, help));
 13:   /* Create a complex non-hermitian matrix */
 14:   PetscCall(MatCreate(PETSC_COMM_SELF, &C));
 15:   PetscCall(MatSetSizes(C, PETSC_DECIDE, PETSC_DECIDE, m, n));
 16:   PetscCall(MatSetFromOptions(C));
 17:   PetscCall(MatSetUp(C));
 18:   for (i = 0; i < m; i++) {
 19:     for (j = 0; j < n; j++) {
 20:       v = 0.0 - 1.0 * PETSC_i;
 21:       if (i > j && i - j < 2) PetscCall(MatSetValues(C, 1, &i, 1, &j, &v, INSERT_VALUES));
 22:     }
 23:   }
 24:   PetscCall(MatAssemblyBegin(C, MAT_FINAL_ASSEMBLY));
 25:   PetscCall(MatAssemblyEnd(C, MAT_FINAL_ASSEMBLY));

 27:   PetscCall(MatCreateHermitianTranspose(C, &C_htransposed));

 29:   PetscCall(MatView(C, PETSC_VIEWER_STDOUT_SELF));
 30:   PetscCall(MatDuplicate(C_htransposed, MAT_COPY_VALUES, &Cht));
 31:   PetscCall(MatView(Cht, PETSC_VIEWER_STDOUT_SELF));
 32:   PetscCall(MatDuplicate(C_htransposed, MAT_DO_NOT_COPY_VALUES, &C_empty));
 33:   PetscCall(MatView(C_empty, PETSC_VIEWER_STDOUT_SELF));

 35:   PetscCall(MatDestroy(&C));
 36:   PetscCall(MatDestroy(&C_htransposed));
 37:   PetscCall(MatDestroy(&Cht));
 38:   PetscCall(MatDestroy(&C_empty));
 39:   PetscCall(PetscFinalize());
 40:   return 0;
 41: }

 43: /*TEST

 45:    build:
 46:      requires: complex

 48:    test:
 49:      output_file: output/ex175.out

 51: TEST*/