LCOV - code coverage report
Current view: top level - sys/mat/tests - test1.c (source / functions) Hit Total Coverage
Test: SLEPc Lines: 30 30 100.0 %
Date: 2024-11-21 00:40:22 Functions: 1 1 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
       3             :    SLEPc - Scalable Library for Eigenvalue Problem Computations
       4             :    Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain
       5             : 
       6             :    This file is part of SLEPc.
       7             :    SLEPc is distributed under a 2-clause BSD license (see LICENSE).
       8             :    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
       9             : */
      10             : 
      11             : static char help[] = "Test MatCreateTile.\n\n";
      12             : 
      13             : #include <slepcsys.h>
      14             : 
      15           3 : int main(int argc,char **argv)
      16             : {
      17           3 :   Mat            T,E,A;
      18           3 :   PetscInt       i,Istart,Iend,n=10;
      19             : 
      20           3 :   PetscFunctionBeginUser;
      21           3 :   PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
      22           3 :   PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
      23           3 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"MatCreateTile test, n=%" PetscInt_FMT "\n",n));
      24             : 
      25             :   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      26             :      Create T=tridiag([-1 2 -1],n,n) and E=eye(n)
      27             :      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
      28             : 
      29           3 :   PetscCall(MatCreate(PETSC_COMM_WORLD,&T));
      30           3 :   PetscCall(MatSetSizes(T,PETSC_DECIDE,PETSC_DECIDE,n,n));
      31           3 :   PetscCall(MatSetFromOptions(T));
      32             : 
      33           3 :   PetscCall(MatGetOwnershipRange(T,&Istart,&Iend));
      34          23 :   for (i=Istart;i<Iend;i++) {
      35          20 :     if (i>0) PetscCall(MatSetValue(T,i,i-1,-1.0,INSERT_VALUES));
      36          20 :     if (i<n-1) PetscCall(MatSetValue(T,i,i+1,-1.0,INSERT_VALUES));
      37          20 :     PetscCall(MatSetValue(T,i,i,2.0,INSERT_VALUES));
      38             :   }
      39           3 :   PetscCall(MatAssemblyBegin(T,MAT_FINAL_ASSEMBLY));
      40           3 :   PetscCall(MatAssemblyEnd(T,MAT_FINAL_ASSEMBLY));
      41             : 
      42           3 :   PetscCall(MatCreate(PETSC_COMM_WORLD,&E));
      43           3 :   PetscCall(MatSetSizes(E,PETSC_DECIDE,PETSC_DECIDE,n,n));
      44           3 :   PetscCall(MatSetFromOptions(E));
      45             : 
      46           3 :   PetscCall(MatGetOwnershipRange(E,&Istart,&Iend));
      47          23 :   for (i=Istart;i<Iend;i++) PetscCall(MatSetValue(E,i,i,1.0,INSERT_VALUES));
      48           3 :   PetscCall(MatAssemblyBegin(E,MAT_FINAL_ASSEMBLY));
      49           3 :   PetscCall(MatAssemblyEnd(E,MAT_FINAL_ASSEMBLY));
      50             : 
      51             :   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      52             :      Create tiled matrix A = [ 2*T -E; 0 3*T ]
      53             :      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
      54           3 :   PetscCall(MatCreateTile(2.0,T,-1.0,E,0.0,E,3.0,T,&A));
      55           3 :   PetscCall(MatView(A,NULL));
      56             : 
      57           3 :   PetscCall(MatDestroy(&T));
      58           3 :   PetscCall(MatDestroy(&E));
      59           3 :   PetscCall(MatDestroy(&A));
      60           3 :   PetscCall(SlepcFinalize());
      61             :   return 0;
      62             : }
      63             : 
      64             : /*TEST
      65             : 
      66             :    test:
      67             :       suffix: 1
      68             :       nsize: 1
      69             : 
      70             :    test:
      71             :       suffix: 2
      72             :       nsize: 2
      73             : 
      74             : TEST*/

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