LCOV - code coverage report
Current view: top level - sys/classes/st/tests - test4.c (source / functions) Hit Total Coverage
Test: SLEPc Lines: 108 108 100.0 %
Date: 2024-11-23 00:39:48 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 ST with four matrices.\n\n";
      12             : 
      13             : #include <slepcst.h>
      14             : 
      15           4 : int main(int argc,char **argv)
      16             : {
      17           4 :   Mat            A,B,C,D,mat[4];
      18           4 :   ST             st;
      19           4 :   KSP            ksp;
      20           4 :   Vec            v,w;
      21           4 :   STType         type;
      22           4 :   PetscScalar    sigma;
      23           4 :   PetscInt       n=10,i,Istart,Iend;
      24             : 
      25           4 :   PetscFunctionBeginUser;
      26           4 :   PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
      27           4 :   PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
      28           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nTest ST with four matrices, n=%" PetscInt_FMT "\n\n",n));
      29             :   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      30             :      Compute the operator matrices
      31             :      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
      32             : 
      33           4 :   PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
      34           4 :   PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,n,n));
      35           4 :   PetscCall(MatSetFromOptions(A));
      36             : 
      37           4 :   PetscCall(MatCreate(PETSC_COMM_WORLD,&B));
      38           4 :   PetscCall(MatSetSizes(B,PETSC_DECIDE,PETSC_DECIDE,n,n));
      39           4 :   PetscCall(MatSetFromOptions(B));
      40             : 
      41           4 :   PetscCall(MatCreate(PETSC_COMM_WORLD,&C));
      42           4 :   PetscCall(MatSetSizes(C,PETSC_DECIDE,PETSC_DECIDE,n,n));
      43           4 :   PetscCall(MatSetFromOptions(C));
      44             : 
      45           4 :   PetscCall(MatCreate(PETSC_COMM_WORLD,&D));
      46           4 :   PetscCall(MatSetSizes(D,PETSC_DECIDE,PETSC_DECIDE,n,n));
      47           4 :   PetscCall(MatSetFromOptions(D));
      48             : 
      49           4 :   PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
      50          44 :   for (i=Istart;i<Iend;i++) {
      51          40 :     PetscCall(MatSetValue(A,i,i,2.0,INSERT_VALUES));
      52          40 :     if (i>0) {
      53          36 :       PetscCall(MatSetValue(A,i,i-1,-1.0,INSERT_VALUES));
      54          36 :       PetscCall(MatSetValue(B,i,i,(PetscScalar)i,INSERT_VALUES));
      55           4 :     } else PetscCall(MatSetValue(B,i,i,-1.0,INSERT_VALUES));
      56          40 :     if (i<n-1) PetscCall(MatSetValue(A,i,i+1,-1.0,INSERT_VALUES));
      57          40 :     PetscCall(MatSetValue(C,i,n-i-1,1.0,INSERT_VALUES));
      58          40 :     PetscCall(MatSetValue(D,i,i,i*.1,INSERT_VALUES));
      59          40 :     if (i==0) PetscCall(MatSetValue(D,0,n-1,1.0,INSERT_VALUES));
      60          40 :     if (i==n-1) PetscCall(MatSetValue(D,n-1,0,1.0,INSERT_VALUES));
      61             :   }
      62             : 
      63           4 :   PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
      64           4 :   PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
      65           4 :   PetscCall(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY));
      66           4 :   PetscCall(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY));
      67           4 :   PetscCall(MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY));
      68           4 :   PetscCall(MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY));
      69           4 :   PetscCall(MatAssemblyBegin(D,MAT_FINAL_ASSEMBLY));
      70           4 :   PetscCall(MatAssemblyEnd(D,MAT_FINAL_ASSEMBLY));
      71           4 :   PetscCall(MatCreateVecs(A,&v,&w));
      72           4 :   PetscCall(VecSet(v,1.0));
      73             : 
      74             :   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      75             :                 Create the spectral transformation object
      76             :      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
      77             : 
      78           4 :   PetscCall(STCreate(PETSC_COMM_WORLD,&st));
      79           4 :   mat[0] = A;
      80           4 :   mat[1] = B;
      81           4 :   mat[2] = C;
      82           4 :   mat[3] = D;
      83           4 :   PetscCall(STSetMatrices(st,4,mat));
      84           4 :   PetscCall(STGetKSP(st,&ksp));
      85           4 :   PetscCall(KSPSetTolerances(ksp,100*PETSC_MACHINE_EPSILON,PETSC_CURRENT,PETSC_CURRENT,PETSC_CURRENT));
      86           4 :   PetscCall(STSetFromOptions(st));
      87             : 
      88             :   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      89             :               Apply the transformed operator for several ST's
      90             :      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
      91             : 
      92             :   /* shift, sigma=0.0 */
      93           4 :   PetscCall(STSetUp(st));
      94           4 :   PetscCall(STGetType(st,&type));
      95           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"ST type %s\n",type));
      96          20 :   for (i=0;i<4;i++) {
      97          16 :     PetscCall(STMatMult(st,i,v,w));
      98          16 :     PetscCall(PetscPrintf(PETSC_COMM_WORLD,"k= %" PetscInt_FMT "\n",i));
      99          16 :     PetscCall(VecView(w,NULL));
     100             :   }
     101           4 :   PetscCall(STMatSolve(st,v,w));
     102           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"solve\n"));
     103           4 :   PetscCall(VecView(w,NULL));
     104             : 
     105             :   /* shift, sigma=0.1 */
     106           4 :   sigma = 0.1;
     107           4 :   PetscCall(STSetShift(st,sigma));
     108           4 :   PetscCall(STGetShift(st,&sigma));
     109           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
     110          20 :   for (i=0;i<4;i++) {
     111          16 :     PetscCall(STMatMult(st,i,v,w));
     112          16 :     PetscCall(PetscPrintf(PETSC_COMM_WORLD,"k= %" PetscInt_FMT "\n",i));
     113          16 :     PetscCall(VecView(w,NULL));
     114             :   }
     115           4 :   PetscCall(STMatSolve(st,v,w));
     116           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"solve\n"));
     117           4 :   PetscCall(VecView(w,NULL));
     118             : 
     119             :   /* sinvert, sigma=0.1 */
     120           4 :   PetscCall(STPostSolve(st));
     121           4 :   PetscCall(STSetType(st,STSINVERT));
     122           4 :   PetscCall(STGetType(st,&type));
     123           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"ST type %s\n",type));
     124           4 :   PetscCall(STGetShift(st,&sigma));
     125           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
     126          20 :   for (i=0;i<4;i++) {
     127          16 :     PetscCall(STMatMult(st,i,v,w));
     128          16 :     PetscCall(PetscPrintf(PETSC_COMM_WORLD,"k= %" PetscInt_FMT "\n",i));
     129          16 :     PetscCall(VecView(w,NULL));
     130             :   }
     131           4 :   PetscCall(STMatSolve(st,v,w));
     132           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"solve\n"));
     133           4 :   PetscCall(VecView(w,NULL));
     134             : 
     135             :   /* sinvert, sigma=-0.5 */
     136           4 :   sigma = -0.5;
     137           4 :   PetscCall(STSetShift(st,sigma));
     138           4 :   PetscCall(STGetShift(st,&sigma));
     139           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
     140          20 :   for (i=0;i<4;i++) {
     141          16 :     PetscCall(STMatMult(st,i,v,w));
     142          16 :     PetscCall(PetscPrintf(PETSC_COMM_WORLD,"k= %" PetscInt_FMT "\n",i));
     143          16 :     PetscCall(VecView(w,NULL));
     144             :   }
     145           4 :   PetscCall(STMatSolve(st,v,w));
     146           4 :   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"solve\n"));
     147           4 :   PetscCall(VecView(w,NULL));
     148             : 
     149           4 :   PetscCall(STDestroy(&st));
     150           4 :   PetscCall(MatDestroy(&A));
     151           4 :   PetscCall(MatDestroy(&B));
     152           4 :   PetscCall(MatDestroy(&C));
     153           4 :   PetscCall(MatDestroy(&D));
     154           4 :   PetscCall(VecDestroy(&v));
     155           4 :   PetscCall(VecDestroy(&w));
     156           4 :   PetscCall(SlepcFinalize());
     157             :   return 0;
     158             : }
     159             : 
     160             : /*TEST
     161             : 
     162             :    test:
     163             :       suffix: 1
     164             :       args: -st_transform -st_matmode {{copy shell}}
     165             :       requires: !single
     166             : 
     167             :    test:
     168             :       suffix: 2
     169             :       args: -st_matmode {{copy shell}}
     170             : 
     171             : TEST*/

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