From 474c2c9b332a98284c9f8e5542ac121806c59b4e Mon Sep 17 00:00:00 2001
From: wolf <wolf@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Wed, 10 Aug 2005 21:52:58 +0000
Subject: [PATCH] New tests.

git-svn-id: https://svn.dealii.org/trunk@11276 0785d39b-7218-0410-832d-ea1e28bc413d
---
 tests/bits/petsc_68.cc | 139 +++++++++++++++++++++++++++++++++++++++
 tests/bits/petsc_69.cc | 145 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 284 insertions(+)
 create mode 100644 tests/bits/petsc_68.cc
 create mode 100644 tests/bits/petsc_69.cc

diff --git a/tests/bits/petsc_68.cc b/tests/bits/petsc_68.cc
new file mode 100644
index 0000000000..2a902204dc
--- /dev/null
+++ b/tests/bits/petsc_68.cc
@@ -0,0 +1,139 @@
+//----------------------------  petsc_68.cc  ---------------------------
+//    $Id$
+//    Version: $Name$ 
+//
+//    Copyright (C) 2004, 2005 by the deal.II authors
+//
+//    This file is subject to QPL and may not be  distributed
+//    without copyright and license information. Please refer
+//    to the file deal.II/doc/license.html for the  text  and
+//    further information on this license.
+//
+//----------------------------  petsc_68.cc  ---------------------------
+
+
+// check PETScWrappers::MatrixBase::clear_row () with used second argument
+
+#include "../tests.h"
+#include <lac/petsc_sparse_matrix.h>
+#include <lac/vector.h>
+
+#include <fstream>
+#include <iostream>
+#include <vector>
+
+
+void test (PETScWrappers::MatrixBase &m)
+{
+  Assert (m.m() != 0, ExcInternalError());
+  Assert (m.n() != 0, ExcInternalError());
+
+                                   // build a tri-diagonal pattern
+  double norm_sqr = 0;
+  unsigned int nnz = 0;
+  const unsigned int N = m.m();
+  for (unsigned int i=0; i<N; ++i)
+    {
+      if (i>=5)
+        {
+          const double s = rand();
+          m.add (i,i-5, s);
+          norm_sqr += s*s;
+          ++nnz;
+        }
+      
+      if (i<N-5)
+        {
+          const double s = rand();
+          m.add (i,i+5, s);
+          norm_sqr += s*s;
+          ++nnz;
+        }
+      
+      const double s = rand();
+      m.add (i,i,s);
+      norm_sqr += s*s;
+      ++nnz;
+    }
+  m.compress ();
+  
+  deallog << m.frobenius_norm() << ' ' << std::sqrt (norm_sqr)
+          << std::endl;
+  deallog << m.n_nonzero_elements() << ' ' << nnz << std::endl;
+
+  Assert (std::fabs (m.frobenius_norm() - std::sqrt(norm_sqr))
+          < std::fabs (std::sqrt (norm_sqr)),
+          ExcInternalError());
+  Assert (m.n_nonzero_elements()-nnz == 0, ExcInternalError());
+
+                                   // now remove the entries of row N/2. set
+                                   // diagonal entries to rnd
+  const double rnd = rand();
+  for (unsigned int i=0; i<N; ++i)
+    {
+      const double s = m.el(N/2,i);
+      norm_sqr -= s*s;
+    }
+  norm_sqr += rnd*rnd;
+  
+  m.clear_row (N/2, rnd);
+  
+  deallog << m.frobenius_norm() << ' ' << std::sqrt (norm_sqr)
+          << std::endl;
+  deallog << m.n_nonzero_elements() << ' ' << nnz << std::endl;
+
+  Assert (std::fabs (m.frobenius_norm() - std::sqrt(norm_sqr))
+          < std::fabs (std::sqrt (norm_sqr)),
+          ExcInternalError());
+
+                                   // make sure that zeroing out rows does at
+                                   // least not add new nonzero entries (it
+                                   // may remove some, though)
+  Assert (m.n_nonzero_elements() <= nnz, ExcInternalError());
+  
+  deallog << "OK" << std::endl;
+}
+
+
+
+int main (int argc,char **argv) 
+{
+  std::ofstream logfile("petsc_68.output");
+  deallog.attach(logfile);
+  deallog.depth_console(0);
+  deallog.threshold_double(1.e-10);
+
+  try
+    {
+      PetscInitialize(&argc,&argv,0,0);
+      {
+        PETScWrappers::SparseMatrix v (14,14,3);
+        test (v);
+      }
+      PetscFinalize();
+    }
+  catch (std::exception &exc)
+    {
+      std::cerr << std::endl << std::endl
+		<< "----------------------------------------------------"
+		<< std::endl;
+      std::cerr << "Exception on processing: " << std::endl
+		<< exc.what() << std::endl
+		<< "Aborting!" << std::endl
+		<< "----------------------------------------------------"
+		<< std::endl;
+      
+      return 1;
+    }
+  catch (...) 
+    {
+      std::cerr << std::endl << std::endl
+		<< "----------------------------------------------------"
+		<< std::endl;
+      std::cerr << "Unknown exception!" << std::endl
+		<< "Aborting!" << std::endl
+		<< "----------------------------------------------------"
+		<< std::endl;
+      return 1;
+    };
+}
diff --git a/tests/bits/petsc_69.cc b/tests/bits/petsc_69.cc
new file mode 100644
index 0000000000..af589657db
--- /dev/null
+++ b/tests/bits/petsc_69.cc
@@ -0,0 +1,145 @@
+//----------------------------  petsc_69.cc  ---------------------------
+//    $Id$
+//    Version: $Name$ 
+//
+//    Copyright (C) 2004, 2005 by the deal.II authors
+//
+//    This file is subject to QPL and may not be  distributed
+//    without copyright and license information. Please refer
+//    to the file deal.II/doc/license.html for the  text  and
+//    further information on this license.
+//
+//----------------------------  petsc_69.cc  ---------------------------
+
+
+// check PETScWrappers::MatrixBase::clear_rows () with used second argument
+
+#include "../tests.h"
+#include <lac/petsc_sparse_matrix.h>
+#include <lac/vector.h>
+
+#include <fstream>
+#include <iostream>
+#include <vector>
+
+
+void test (PETScWrappers::MatrixBase &m)
+{
+  Assert (m.m() != 0, ExcInternalError());
+  Assert (m.n() != 0, ExcInternalError());
+
+                                   // build a tri-diagonal pattern
+  double norm_sqr = 0;
+  unsigned int nnz = 0;
+  const unsigned int N = m.m();
+  for (unsigned int i=0; i<N; ++i)
+    {
+      if (i>=5)
+        {
+          const double s = rand();
+          m.add (i,i-5, s);
+          norm_sqr += s*s;
+          ++nnz;
+        }
+      
+      if (i<N-5)
+        {
+          const double s = rand();
+          m.add (i,i+5, s);
+          norm_sqr += s*s;
+          ++nnz;
+        }
+      
+      const double s = rand();
+      m.add (i,i,s);
+      norm_sqr += s*s;
+      ++nnz;
+    }
+  m.compress ();
+  
+  deallog << m.frobenius_norm() << ' ' << std::sqrt (norm_sqr)
+          << std::endl;
+  deallog << m.n_nonzero_elements() << ' ' << nnz << std::endl;
+
+  Assert (std::fabs (m.frobenius_norm() - std::sqrt(norm_sqr))
+          < std::fabs (std::sqrt (norm_sqr)),
+          ExcInternalError());
+  Assert (m.n_nonzero_elements()-nnz == 0, ExcInternalError());
+
+                                   // now remove the entries of rows N/2 and
+                                   // N/3. set diagonal entries to rnd
+  const double rnd = rand();
+  for (unsigned int i=0; i<N; ++i)
+    {
+      const double s = m.el(N/2,i);
+      norm_sqr -= s*s;
+    }
+  for (unsigned int i=0; i<N; ++i)
+    {
+      const double s = m.el(N/3,i);
+      norm_sqr -= s*s;
+    }
+  norm_sqr += 2*rnd*rnd;
+  
+  const unsigned int rows[2] = { N/3, N/2 };
+  m.clear_rows (std::vector<unsigned int>(&rows[0], &rows[2]), rnd);
+  
+  deallog << m.frobenius_norm() << ' ' << std::sqrt (norm_sqr)
+          << std::endl;
+  deallog << m.n_nonzero_elements() << ' ' << nnz << std::endl;
+
+  Assert (std::fabs (m.frobenius_norm() - std::sqrt(norm_sqr))
+          < std::fabs (std::sqrt (norm_sqr)),
+          ExcInternalError());
+
+                                   // make sure that zeroing out rows does at
+                                   // least not add new nonzero entries (it
+                                   // may remove some, though)
+  Assert (m.n_nonzero_elements() <= nnz, ExcInternalError());
+  
+  deallog << "OK" << std::endl;
+}
+
+
+
+int main (int argc,char **argv) 
+{
+  std::ofstream logfile("petsc_69.output");
+  deallog.attach(logfile);
+  deallog.depth_console(0);
+  deallog.threshold_double(1.e-10);
+
+  try
+    {
+      PetscInitialize(&argc,&argv,0,0);
+      {
+        PETScWrappers::SparseMatrix v (14,14,3);
+        test (v);
+      }
+      PetscFinalize();
+    }
+  catch (std::exception &exc)
+    {
+      std::cerr << std::endl << std::endl
+		<< "----------------------------------------------------"
+		<< std::endl;
+      std::cerr << "Exception on processing: " << std::endl
+		<< exc.what() << std::endl
+		<< "Aborting!" << std::endl
+		<< "----------------------------------------------------"
+		<< std::endl;
+      
+      return 1;
+    }
+  catch (...) 
+    {
+      std::cerr << std::endl << std::endl
+		<< "----------------------------------------------------"
+		<< std::endl;
+      std::cerr << "Unknown exception!" << std::endl
+		<< "Aborting!" << std::endl
+		<< "----------------------------------------------------"
+		<< std::endl;
+      return 1;
+    };
+}
-- 
2.39.5