Intrepid
test_02.cpp
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43 
44 
51 #include "Teuchos_oblackholestream.hpp"
52 #include "Teuchos_RCP.hpp"
53 #include "Teuchos_GlobalMPISession.hpp"
56 #include <iostream>
57 using namespace Intrepid;
58 
63 int main(int argc, char *argv[]) {
64 
65  Teuchos::GlobalMPISession mpiSession(&argc, &argv);
66 
67  // This little trick lets us print to std::cout only if a (dummy) command-line argument is provided.
68  int iprint = argc - 1;
69 
70  Teuchos::RCP<std::ostream> outStream;
71  Teuchos::oblackholestream bhs; // outputs nothing
72 
73  if (iprint > 0)
74  outStream = Teuchos::rcp(&std::cout, false);
75  else
76  outStream = Teuchos::rcp(&bhs, false);
77 
78  // Save the format state of the original std::cout.
79  Teuchos::oblackholestream oldFormatState;
80  oldFormatState.copyfmt(std::cout);
81 
82  *outStream \
83  << "===============================================================================\n" \
84  << "| |\n" \
85  << "| Unit Test OrthogonalBases |\n" \
86  << "| |\n" \
87  << "| 1) Tests orthogonality of tetrahedral orthogonal basis |\n" \
88  << "| |\n" \
89  << "| Questions? Contact Pavel Bochev (pbboche@sandia.gov) or |\n" \
90  << "| Denis Ridzal (dridzal@sandia.gov) or |\n" \
91  << "| Robert Kirby (robert.c.kirby@ttu.edu) |\n" \
92  << "| |\n" \
93  << "| Intrepid's website: http://trilinos.sandia.gov/packages/intrepid |\n" \
94  << "| Trilinos website: http://trilinos.sandia.gov |\n" \
95  << "| |\n" \
96  << "===============================================================================\n";
97 
98  int errorFlag = 0;
99 
100  // First, get a reference quadrature rule
101 
103  FieldContainer<double> cubPts( myCub.getNumPoints() , 3 );
104  FieldContainer<double> cubWts( myCub.getNumPoints() );
105 
106  myCub.getCubature( cubPts , cubWts );
107 
108  // Tabulate the basis functions at the cubature points
109  const int deg = 10;
110  const int polydim = (deg+1)*(deg+2)*(deg+3)/6;
111  FieldContainer<double> basisAtCubPts( polydim , myCub.getNumPoints() );
112  OrthogonalBases::tabulateTetrahedron<double,FieldContainer<double>,FieldContainer<double> >( cubPts , deg , basisAtCubPts );
113 
114  // Now let's compute the mass matrix
115  for (int i=0;i<polydim;i++) {
116  for (int j=0;j<polydim;j++) {
117  double cur = 0;
118  for (int k=0;k<myCub.getNumPoints();k++) {
119  cur += cubWts(k) * basisAtCubPts( i , k ) * basisAtCubPts( j , k );
120  }
121  if (i != j && fabs( cur ) > 20.0 * INTREPID_TOL) {
122  std::cout << INTREPID_TOL << std::endl;
123  std::cout << i << " " << j << " " << cur << std::endl;
124  errorFlag++;
125  }
126  else if (i == j && fabs( cur ) < 20.0 * INTREPID_TOL ) {
127  std::cout << i << " " << j << " " << cur << std::endl;
128  errorFlag++;
129  }
130 
131  }
132  }
133 
134 
135  if (errorFlag != 0)
136  std::cout << "End Result: TEST FAILED\n";
137  else
138  std::cout << "End Result: TEST PASSED\n";
139 
140  // reset format state of std::cout
141  std::cout.copyfmt(oldFormatState);
142 
143  return errorFlag;
144 }
Header file for orthogonal bases on various cell types.
virtual void getCubature(ArrayPoint &cubPoints, ArrayWeight &cubWeights) const
Returns cubature points and weights (return arrays must be pre-sized/pre-allocated).
Defines direct integration rules on a tetrahedron.
Header file for utility class to provide multidimensional containers.
virtual int getNumPoints() const
Returns the number of cubature points.
Header file for the Intrepid::CubatureDirectTetDefault class.