GCC Code Coverage Report

Directory: ./
File: src/sys/classes/st/tests/test2.c
Date: 2025-11-19 04:19:03
Exec Total Coverage
Lines: 110 110 100.0%
Functions: 1 1 100.0%
Branches: 366 544 67.3%
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 one matrix.\n\n";
12
13 #include <slepcst.h>
14
15 45 int main(int argc,char **argv)
16 {
17 45 Mat A,B,mat[1];
18 45 ST st;
19 45 Vec v,w;
20 45 STType type;
21 45 PetscScalar sigma,tau,val;
22 45 PetscInt n=10,i,Istart,Iend;
23 45 PetscBool test_compl=PETSC_FALSE;
24
25
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 45 PetscFunctionBeginUser;
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 45 PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
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 45 PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
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 45 PetscCall(PetscOptionsGetBool(NULL,NULL,"-complex",&test_compl,NULL));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\n1-D Laplacian, n=%" PetscInt_FMT "\n\n",n));
30
31 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
32 Compute the operator matrix for the 1-D Laplacian
33 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
34
35
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 45 PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
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 45 PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,n,n));
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 45 PetscCall(MatSetFromOptions(A));
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 45 PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
40 #if defined(PETSC_USE_COMPLEX)
41
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 30 val = test_compl? PetscCMPLX(-1.0,0.4): -1.0;
42 #else
43 15 val = -1.0;
44 #endif
45
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 495 for (i=Istart;i<Iend;i++) {
46
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 450 if (i>0) PetscCall(MatSetValue(A,i,i-1,val,INSERT_VALUES));
47
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 450 if (i<n-1) PetscCall(MatSetValue(A,i,i+1,PetscConj(val),INSERT_VALUES));
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 450 PetscCall(MatSetValue(A,i,i,2.0,INSERT_VALUES));
49 }
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 45 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
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 45 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
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 45 PetscCall(MatCreateVecs(A,&v,&w));
53 #if defined(PETSC_USE_COMPLEX)
54
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 30 val = test_compl? PetscCMPLX(1.0,-0.01): 1.0;
55 #else
56 15 val = 1.0;
57 #endif
58
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 45 PetscCall(VecSet(v,val));
59
60 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
61 Create the spectral transformation object
62 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
63
64
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 45 PetscCall(STCreate(PETSC_COMM_WORLD,&st));
65 45 mat[0] = A;
66
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 45 PetscCall(STSetMatrices(st,1,mat));
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 45 PetscCall(STSetTransform(st,PETSC_TRUE));
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 45 PetscCall(STSetFromOptions(st));
69
70 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
71 Apply the transformed operator for several ST's
72 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
73
74 /* shift, sigma=0.0 */
75
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 45 PetscCall(STSetUp(st));
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 45 PetscCall(STGetType(st,&type));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"ST type %s\n",type));
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 45 PetscCall(STApply(st,v,w));
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 45 PetscCall(VecView(w,NULL));
80
81 /* shift, sigma=0.1 */
82 45 sigma = 0.1;
83
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 45 PetscCall(STSetShift(st,sigma));
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 45 PetscCall(STGetShift(st,&sigma));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
86
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 45 PetscCall(STApply(st,v,w));
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 45 PetscCall(VecView(w,NULL));
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 45 PetscCall(STApplyTranspose(st,v,w));
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 45 PetscCall(VecView(w,NULL));
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 45 if (test_compl) {
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 15 PetscCall(STApplyHermitianTranspose(st,v,w));
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 15 PetscCall(VecView(w,NULL));
93 }
94
95 /* sinvert, sigma=0.1 */
96
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 45 PetscCall(STPostSolve(st)); /* undo changes if inplace */
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 45 PetscCall(STSetType(st,STSINVERT));
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 45 PetscCall(STGetType(st,&type));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"ST type %s\n",type));
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 45 PetscCall(STGetShift(st,&sigma));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
102
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 45 PetscCall(STApply(st,v,w));
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 45 PetscCall(VecView(w,NULL));
104
105 /* sinvert, sigma=-0.5 */
106 45 sigma = -0.5;
107
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 45 PetscCall(STSetShift(st,sigma));
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 45 PetscCall(STGetShift(st,&sigma));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
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 45 PetscCall(STApply(st,v,w));
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 45 PetscCall(VecView(w,NULL));
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 45 if (test_compl) {
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 15 PetscCall(STApplyHermitianTranspose(st,v,w));
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 15 PetscCall(VecView(w,NULL));
115 }
116
117 /* cayley, sigma=-0.5, tau=-0.5 (equal to sigma by default) */
118
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 45 PetscCall(STPostSolve(st)); /* undo changes if inplace */
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 45 PetscCall(STSetType(st,STCAYLEY));
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 45 PetscCall(STSetUp(st));
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 45 PetscCall(STGetType(st,&type));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"ST type %s\n",type));
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 45 PetscCall(STGetShift(st,&sigma));
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 45 PetscCall(STCayleyGetAntishift(st,&tau));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g, antishift=%g\n",(double)PetscRealPart(sigma),(double)PetscRealPart(tau)));
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 45 PetscCall(STApply(st,v,w));
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 45 PetscCall(VecView(w,NULL));
128
129 /* cayley, sigma=1.1, tau=1.1 (still equal to sigma) */
130 45 sigma = 1.1;
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 45 PetscCall(STSetShift(st,sigma));
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 45 PetscCall(STGetShift(st,&sigma));
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 45 PetscCall(STCayleyGetAntishift(st,&tau));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g, antishift=%g\n",(double)PetscRealPart(sigma),(double)PetscRealPart(tau)));
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 45 PetscCall(STApply(st,v,w));
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 45 PetscCall(VecView(w,NULL));
137
138 /* cayley, sigma=1.1, tau=-1.0 */
139 45 tau = -1.0;
140
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 45 PetscCall(STCayleySetAntishift(st,tau));
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 45 PetscCall(STGetShift(st,&sigma));
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 45 PetscCall(STCayleyGetAntishift(st,&tau));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g, antishift=%g\n",(double)PetscRealPart(sigma),(double)PetscRealPart(tau)));
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 45 PetscCall(STApply(st,v,w));
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 45 PetscCall(VecView(w,NULL));
146
147 /* check inner product matrix in Cayley */
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 45 PetscCall(STGetBilinearForm(st,&B));
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 45 PetscCall(MatMult(B,v,w));
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 45 PetscCall(VecView(w,NULL));
151
152 /* check again sinvert, sigma=0.1 */
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 45 PetscCall(STPostSolve(st)); /* undo changes if inplace */
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 45 PetscCall(STSetType(st,STSINVERT));
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 45 PetscCall(STGetType(st,&type));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"ST type %s\n",type));
157 45 sigma = 0.1;
158
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 45 PetscCall(STSetShift(st,sigma));
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 45 PetscCall(STGetShift(st,&sigma));
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 45 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"With shift=%g\n",(double)PetscRealPart(sigma)));
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 45 PetscCall(STApply(st,v,w));
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 45 PetscCall(VecView(w,NULL));
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 45 PetscCall(STDestroy(&st));
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 45 PetscCall(MatDestroy(&A));
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 45 PetscCall(MatDestroy(&B));
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 45 PetscCall(VecDestroy(&v));
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 45 PetscCall(VecDestroy(&w));
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 45 PetscCall(SlepcFinalize());
170 return 0;
171 }
172
173 /*TEST
174
175 test:
176 suffix: 1
177 args: -st_matmode {{copy inplace shell}}
178 requires: !single
179
180 test:
181 suffix: 2
182 args: -complex -st_matmode {{copy inplace shell}}
183 requires: complex !single
184 filter: sed -e "s/3.46945e-18 - 8.67362e-18 i/0./"
185
186 TEST*/
187