GCC Code Coverage Report

Directory: ./
File: src/sys/classes/st/tests/test1.c
Date: 2025-11-19 04:19:03
Exec Total Coverage
Lines: 105 111 94.6%
Functions: 6 7 85.7%
Branches: 316 524 60.3%
Line Branch Exec Source
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 shell matrices.\n\n";
12
13 #include <slepcst.h>
14
15 static PetscErrorCode MatMult_Shell(Mat S,Vec x,Vec y);
16 static PetscErrorCode MatMultTranspose_Shell(Mat S,Vec x,Vec y);
17 #if defined(PETSC_USE_COMPLEX)
18 static PetscErrorCode MatMultHermitianTranspose_Shell(Mat S,Vec x,Vec y);
19 #endif
20 static PetscErrorCode MatGetDiagonal_Shell(Mat S,Vec diag);
21 static PetscErrorCode MatDuplicate_Shell(Mat S,MatDuplicateOption op,Mat *M);
22
23 20 static PetscErrorCode MyShellMatCreate(Mat *A,Mat *M)
24 {
25 20 MPI_Comm comm;
26 20 PetscInt n;
27
28
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 20 PetscFunctionBeginUser;
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 20 PetscCall(MatGetSize(*A,&n,NULL));
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 20 PetscCall(PetscObjectGetComm((PetscObject)*A,&comm));
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 20 PetscCall(MatCreateShell(comm,PETSC_DECIDE,PETSC_DECIDE,n,n,A,M));
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 20 PetscCall(MatShellSetOperation(*M,MATOP_MULT,(PetscErrorCodeFn*)MatMult_Shell));
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 20 PetscCall(MatShellSetOperation(*M,MATOP_MULT_TRANSPOSE,(PetscErrorCodeFn*)MatMultTranspose_Shell));
34 #if defined(PETSC_USE_COMPLEX)
35
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 10 PetscCall(MatShellSetOperation(*M,MATOP_MULT_HERMITIAN_TRANSPOSE,(PetscErrorCodeFn*)MatMultHermitianTranspose_Shell));
36 #endif
37
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 20 PetscCall(MatShellSetOperation(*M,MATOP_GET_DIAGONAL,(PetscErrorCodeFn*)MatGetDiagonal_Shell));
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 20 PetscCall(MatShellSetOperation(*M,MATOP_DUPLICATE,(PetscErrorCodeFn*)MatDuplicate_Shell));
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 4 PetscFunctionReturn(PETSC_SUCCESS);
40 }
41
42 20 int main(int argc,char **argv)
43 {
44 20 Mat A,S,mat[1];
45 20 ST st;
46 20 Vec v,w;
47 20 STType type;
48 20 KSP ksp;
49 20 PC pc;
50 20 PetscScalar sigma;
51 20 PetscInt n=10,i,Istart,Iend;
52
53
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 20 PetscFunctionBeginUser;
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 20 PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
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 20 PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
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 20 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\n1-D Laplacian with shell matrices, n=%" PetscInt_FMT "\n\n",n));
57
58 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
59 Compute the operator matrix for the 1-D Laplacian
60 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
61
62
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 20 PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
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 20 PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,n,n));
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 20 PetscCall(MatSetFromOptions(A));
65
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 20 PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
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 220 for (i=Istart;i<Iend;i++) {
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 200 if (i>0) PetscCall(MatSetValue(A,i,i-1,-1.0,INSERT_VALUES));
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 200 if (i<n-1) PetscCall(MatSetValue(A,i,i+1,-1.0,INSERT_VALUES));
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 200 PetscCall(MatSetValue(A,i,i,2.0,INSERT_VALUES));
71 }
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 20 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
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 20 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
74
75 /* create the shell version of A */
76
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 20 PetscCall(MyShellMatCreate(&A,&S));
77
78 /* work vectors */
79
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 20 PetscCall(MatCreateVecs(A,&v,&w));
80
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 20 PetscCall(VecSet(v,1.0));
81
82 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
83 Create the spectral transformation object
84 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
85
86
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 20 PetscCall(STCreate(PETSC_COMM_WORLD,&st));
87 20 mat[0] = S;
88
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 20 PetscCall(STSetMatrices(st,1,mat));
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 20 PetscCall(STSetTransform(st,PETSC_TRUE));
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 20 PetscCall(STSetFromOptions(st));
91
92 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
93 Apply the transformed operator for several ST's
94 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
95
96 /* shift, sigma=0.0 */
97
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 20 PetscCall(STSetUp(st));
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 20 PetscCall(STGetType(st,&type));
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 20 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"ST type %s\n",type));
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 20 PetscCall(STApply(st,v,w));
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 20 PetscCall(VecView(w,NULL));
102
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 20 PetscCall(STApplyHermitianTranspose(st,v,w));
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 20 PetscCall(VecView(w,NULL));
104
105 /* shift, sigma=0.1 */
106 20 sigma = 0.1;
107
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 20 PetscCall(STSetShift(st,sigma));
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 20 PetscCall(STGetShift(st,&sigma));
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 20 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
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 20 PetscCall(STApply(st,v,w));
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 20 PetscCall(VecView(w,NULL));
112
113 /* sinvert, sigma=0.1 */
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 20 PetscCall(STPostSolve(st)); /* undo changes if inplace */
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 20 PetscCall(STSetType(st,STSINVERT));
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 20 PetscCall(STGetKSP(st,&ksp));
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 20 PetscCall(KSPSetType(ksp,KSPGMRES));
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 20 PetscCall(KSPGetPC(ksp,&pc));
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 20 PetscCall(PCSetType(pc,PCJACOBI));
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 20 PetscCall(STGetType(st,&type));
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 20 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"ST type %s\n",type));
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 20 PetscCall(STGetShift(st,&sigma));
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 20 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
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 20 PetscCall(STApply(st,v,w));
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 20 PetscCall(VecView(w,NULL));
126
127 /* sinvert, sigma=-0.5 */
128 20 sigma = -0.5;
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 20 PetscCall(STSetShift(st,sigma));
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 20 PetscCall(STGetShift(st,&sigma));
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 20 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
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 20 PetscCall(STApply(st,v,w));
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 20 PetscCall(VecView(w,NULL));
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 20 PetscCall(STDestroy(&st));
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 20 PetscCall(MatDestroy(&A));
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 20 PetscCall(MatDestroy(&S));
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 20 PetscCall(VecDestroy(&v));
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 20 PetscCall(VecDestroy(&w));
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 20 PetscCall(SlepcFinalize());
141 return 0;
142 }
143
144 240 static PetscErrorCode MatMult_Shell(Mat S,Vec x,Vec y)
145 {
146 240 Mat *A;
147
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 240 PetscFunctionBeginUser;
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 240 PetscCall(MatShellGetContext(S,&A));
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 240 PetscCall(MatMult(*A,x,y));
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 48 PetscFunctionReturn(PETSC_SUCCESS);
152 }
153
154 10 static PetscErrorCode MatMultTranspose_Shell(Mat S,Vec x,Vec y)
155 {
156 10 Mat *A;
157
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 10 PetscFunctionBeginUser;
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 10 PetscCall(MatShellGetContext(S,&A));
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 10 PetscCall(MatMultTranspose(*A,x,y));
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 2 PetscFunctionReturn(PETSC_SUCCESS);
162 }
163
164 #if defined(PETSC_USE_COMPLEX)
165 10 static PetscErrorCode MatMultHermitianTranspose_Shell(Mat S,Vec x,Vec y)
166 {
167 10 Mat *A;
168
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 10 PetscFunctionBeginUser;
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 10 PetscCall(MatShellGetContext(S,&A));
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 10 PetscCall(MatMultHermitianTranspose(*A,x,y));
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 2 PetscFunctionReturn(PETSC_SUCCESS);
173 }
174 #endif
175
176 40 static PetscErrorCode MatGetDiagonal_Shell(Mat S,Vec diag)
177 {
178 40 Mat *A;
179
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 40 PetscFunctionBeginUser;
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 40 PetscCall(MatShellGetContext(S,&A));
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 40 PetscCall(MatGetDiagonal(*A,diag));
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 8 PetscFunctionReturn(PETSC_SUCCESS);
184 }
185
186 ✗ static PetscErrorCode MatDuplicate_Shell(Mat S,MatDuplicateOption op,Mat *M)
187 {
188 ✗ Mat *A;
189
190 ✗ PetscFunctionBeginUser;
191 ✗ PetscCall(MatShellGetContext(S,&A));
192 ✗ PetscCall(MyShellMatCreate(A,M));
193 ✗ PetscFunctionReturn(PETSC_SUCCESS);
194 }
195
196 /*TEST
197
198 test:
199 suffix: 1
200 args: -st_matmode {{inplace shell}}
201 requires: !single
202
203 TEST*/
204