GCC Code Coverage Report

Directory: ./
File: src/lme/tests/test1.c
Date: 2025-11-19 04:19:03
Exec Total Coverage
Lines: 89 89 100.0%
Functions: 1 1 100.0%
Branches: 296 434 68.2%
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 LME interface functions, based on ex32.c.\n\n"
12 "The command line options are:\n"
13 " -n <n>, where <n> = number of grid subdivisions in x dimension.\n"
14 " -m <m>, where <m> = number of grid subdivisions in y dimension.\n\n";
15
16 #include <slepclme.h>
17
18 28 int main(int argc,char **argv)
19 {
20 28 Mat A,B,C,C1,D;
21 28 LME lme;
22 28 PetscReal tol,errest,error;
23 28 PetscScalar *u;
24 28 PetscInt N,n=10,m,Istart,Iend,II,maxit,ncv,i,j;
25 28 PetscBool flg,testprefix=PETSC_FALSE,viewmatrices=PETSC_FALSE;
26 28 const char *prefix;
27 28 LMEType type;
28 28 LMEProblemType ptype;
29 28 PetscViewerAndFormat *vf;
30
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 28 PetscFunctionBeginUser;
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 28 PetscCall(SlepcInitialize(&argc,&argv,NULL,help));
33
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 28 PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL));
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 28 PetscCall(PetscOptionsGetInt(NULL,NULL,"-m",&m,&flg));
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 28 if (!flg) m=n;
37 28 N = n*m;
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 28 PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nLyapunov equation, N=%" PetscInt_FMT " (%" PetscInt_FMT "x%" PetscInt_FMT " grid)\n\n",N,n,m));
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 28 PetscCall(PetscOptionsGetBool(NULL,NULL,"-test_prefix",&testprefix,NULL));
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 28 PetscCall(PetscOptionsGetBool(NULL,NULL,"-view_matrices",&viewmatrices,NULL));
41
42 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
43 Create the 2-D Laplacian, A
44 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
45
46
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 28 PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
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 28 PetscCall(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,N,N));
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 28 PetscCall(MatSetFromOptions(A));
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 28 PetscCall(MatGetOwnershipRange(A,&Istart,&Iend));
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 2828 for (II=Istart;II<Iend;II++) {
51 2800 i = II/n; j = II-i*n;
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 2800 if (i>0) PetscCall(MatSetValue(A,II,II-n,1.0,INSERT_VALUES));
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 2800 if (i<m-1) PetscCall(MatSetValue(A,II,II+n,1.0,INSERT_VALUES));
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 2800 if (j>0) PetscCall(MatSetValue(A,II,II-1,1.0,INSERT_VALUES));
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 2800 if (j<n-1) PetscCall(MatSetValue(A,II,II+1,1.0,INSERT_VALUES));
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 2800 PetscCall(MatSetValue(A,II,II,-4.0,INSERT_VALUES));
57 }
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 28 PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY));
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 28 PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY));
60
61 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
62 Create a low-rank Mat to store the right-hand side C = C1*C1'
63 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
64
65
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 28 PetscCall(MatCreate(PETSC_COMM_WORLD,&C1));
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 28 PetscCall(MatSetSizes(C1,PETSC_DECIDE,PETSC_DECIDE,N,2));
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 28 PetscCall(MatSetType(C1,MATDENSE));
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 28 PetscCall(MatGetOwnershipRange(C1,&Istart,&Iend));
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 28 PetscCall(MatDenseGetArray(C1,&u));
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 2828 for (i=Istart;i<Iend;i++) {
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 2800 if (i<N/2) u[i-Istart] = 1.0;
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 2800 if (i==0) u[i+Iend-2*Istart] = -2.0;
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 2800 if (i==1) u[i+Iend-2*Istart] = -1.0;
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 2800 if (i==2) u[i+Iend-2*Istart] = -1.0;
75 }
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 28 PetscCall(MatDenseRestoreArray(C1,&u));
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 28 PetscCall(MatAssemblyBegin(C1,MAT_FINAL_ASSEMBLY));
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 28 PetscCall(MatAssemblyEnd(C1,MAT_FINAL_ASSEMBLY));
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 28 PetscCall(MatCreateLRC(NULL,C1,NULL,NULL,&C));
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 28 PetscCall(MatDestroy(&C1));
81
82 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
83 Create the solver and set various options
84 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
85
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 28 PetscCall(LMECreate(PETSC_COMM_WORLD,&lme));
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 28 PetscCall(LMESetProblemType(lme,LME_SYLVESTER));
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 28 PetscCall(LMEGetProblemType(lme,&ptype));
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 28 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Equation type set to %d\n",ptype));
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 28 PetscCall(LMESetProblemType(lme,LME_LYAPUNOV));
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 28 PetscCall(LMEGetProblemType(lme,&ptype));
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 28 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Equation type changed to %d\n",ptype));
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 28 PetscCall(LMESetCoefficients(lme,A,NULL,NULL,NULL));
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 28 PetscCall(LMESetRHS(lme,C));
94
95 /* test prefix usage */
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 28 if (testprefix) {
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 10 PetscCall(LMESetOptionsPrefix(lme,"check_"));
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 10 PetscCall(LMEAppendOptionsPrefix(lme,"myprefix_"));
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 10 PetscCall(LMEGetOptionsPrefix(lme,&prefix));
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 10 PetscCall(PetscPrintf(PETSC_COMM_WORLD," LME prefix is currently: %s\n",prefix));
101 }
102
103 /* test some interface functions */
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 28 PetscCall(LMEGetCoefficients(lme,&B,NULL,NULL,NULL));
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 28 if (viewmatrices) PetscCall(MatView(B,PETSC_VIEWER_STDOUT_WORLD));
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 28 PetscCall(LMEGetRHS(lme,&D));
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 28 if (viewmatrices) PetscCall(MatView(D,PETSC_VIEWER_STDOUT_WORLD));
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 28 PetscCall(LMESetTolerances(lme,PETSC_CURRENT,100));
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 28 PetscCall(LMESetDimensions(lme,21));
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 28 PetscCall(LMESetErrorIfNotConverged(lme,PETSC_TRUE));
111 /* test monitors */
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 28 PetscCall(PetscViewerAndFormatCreate(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_DEFAULT,&vf));
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 28 PetscCall(LMEMonitorSet(lme,(PetscErrorCode (*)(LME,PetscInt,PetscReal,void*))LMEMonitorDefault,vf,(PetscErrorCode (*)(void**))PetscViewerAndFormatDestroy));
114 /* PetscCall(LMEMonitorCancel(lme)); */
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 28 PetscCall(LMESetFromOptions(lme));
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 28 PetscCall(LMEGetType(lme,&type));
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 28 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Solver being used: %s\n",type));
119
120 /* query properties and print them */
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 28 PetscCall(LMEGetTolerances(lme,&tol,&maxit));
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 28 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Tolerance: %g, max iterations: %" PetscInt_FMT "\n",(double)tol,maxit));
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 28 PetscCall(LMEGetDimensions(lme,&ncv));
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 28 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Subspace dimension: %" PetscInt_FMT "\n",ncv));
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 28 PetscCall(LMEGetErrorIfNotConverged(lme,&flg));
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 28 if (flg) PetscCall(PetscPrintf(PETSC_COMM_WORLD," Erroring out if convergence fails\n"));
127
128 /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
129 Solve the matrix equation and compute residual error
130 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
131
132
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 28 PetscCall(LMESolve(lme));
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 28 PetscCall(LMEGetErrorEstimate(lme,&errest));
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 28 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Error estimate reported by the solver: %.4g\n",(double)errest));
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 28 PetscCall(LMEComputeError(lme,&error));
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 28 PetscCall(PetscPrintf(PETSC_COMM_WORLD," Computed residual norm: %.4g\n\n",(double)error));
137
138 /*
139 Free work space
140 */
141
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 28 PetscCall(LMEDestroy(&lme));
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 28 PetscCall(MatDestroy(&A));
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 28 PetscCall(MatDestroy(&C));
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 28 PetscCall(SlepcFinalize());
145 return 0;
146 }
147
148 /*TEST
149
150 test:
151 suffix: 1
152 args: -lme_monitor_cancel -lme_converged_reason -lme_view -view_matrices -log_exclude lme,bv
153 requires: double
154 filter: sed -e "s/4.0[0-9]*e-10/4.03e-10/"
155
156 test:
157 suffix: 2
158 args: -test_prefix -check_myprefix_lme_monitor
159 requires: double
160 filter: sed -e "s/estimate [0-9]\.[0-9]*e[+-]\([0-9]*\)/estimate (removed)/g" | sed -e "s/4.0[0-9]*e-10/4.03e-10/"
161
162 test:
163 suffix: 3
164 args: -lme_monitor_cancel -info -lme_monitor draw::draw_lg -draw_virtual
165 requires: x double
166 filter: sed -e "s/equation = [0-9]\.[0-9]*e[+-]\([0-9]*\)/equation = (removed)/g" | sed -e "s/4.0[0-9]*e-10/4.03e-10/" | grep -v Comm | grep -v machine | grep -v PetscGetHostName | grep -v OpenMP | grep -v Colormap | grep -v "Rank of the Cholesky factor" | grep -v "potrf failed" | grep -v "querying" | grep -v FPTrap | grep -v Device | grep -v SetNumThread
167
168 TEST*/
169