Actual source code: ex255.c
1: static char help[] = "Tests MatConvert from AIJ to MATIS with a block size greater than 1.\n";
3: #include <petscmat.h>
4: int main(int argc, char **args)
5: {
6: Mat A, B;
7: char file[PETSC_MAX_PATH_LEN];
8: PetscViewer fd;
9: PetscBool flg, equal;
11: PetscFunctionBeginUser;
12: PetscCall(PetscInitialize(&argc, &args, NULL, help));
14: /* Load an AIJ matrix */
15: PetscCall(PetscOptionsGetString(NULL, NULL, "-f", file, sizeof(file), &flg));
16: PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_USER, "Must indicate binary file with the -f option");
17: PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD, file, FILE_MODE_READ, &fd));
18: PetscCall(MatCreate(PETSC_COMM_WORLD, &A));
19: PetscCall(MatSetFromOptions(A));
20: PetscCall(MatLoad(A, fd));
22: /* Convert it to MATIS */
23: PetscCall(MatConvert(A, MATIS, MAT_INITIAL_MATRIX, &B));
25: /* Check they are equal */
26: PetscCall(MatEqual(A, B, &equal));
27: PetscCheck(equal, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "A and B are not equal");
29: PetscCall(MatDestroy(&A));
30: PetscCall(MatDestroy(&B));
31: PetscCall(PetscViewerDestroy(&fd));
32: PetscCall(PetscFinalize());
33: }
35: /*TEST
36: test:
37: requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES)
38: args: -mat_type aij -matload_block_size {{1 2}} -f ${DATAFILESPATH}/matrices/smallbs2
39: output_file: output/empty.out
41: TEST*/