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Intrepid
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00001 // @HEADER 00002 // ************************************************************************ 00003 // 00004 // Intrepid Package 00005 // Copyright (2007) Sandia Corporation 00006 // 00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive 00008 // license for use of this work by or on behalf of the U.S. Government. 00009 // 00010 // Redistribution and use in source and binary forms, with or without 00011 // modification, are permitted provided that the following conditions are 00012 // met: 00013 // 00014 // 1. Redistributions of source code must retain the above copyright 00015 // notice, this list of conditions and the following disclaimer. 00016 // 00017 // 2. Redistributions in binary form must reproduce the above copyright 00018 // notice, this list of conditions and the following disclaimer in the 00019 // documentation and/or other materials provided with the distribution. 00020 // 00021 // 3. Neither the name of the Corporation nor the names of the 00022 // contributors may be used to endorse or promote products derived from 00023 // this software without specific prior written permission. 00024 // 00025 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY 00026 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00027 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 00028 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE 00029 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00030 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00031 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00032 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00033 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00034 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00035 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00036 // 00037 // Questions? Contact Pavel Bochev (pbboche@sandia.gov) 00038 // Denis Ridzal (dridzal@sandia.gov), or 00039 // Kara Peterson (kjpeter@sandia.gov) 00040 // 00041 // ************************************************************************ 00042 // @HEADER 00043 00044 00051 #include "Intrepid_DefaultCubatureFactory.hpp" 00052 #include "Intrepid_Utils.hpp" 00053 #include "Teuchos_oblackholestream.hpp" 00054 #include "Teuchos_RCP.hpp" 00055 #include "Teuchos_GlobalMPISession.hpp" 00056 00057 using namespace Intrepid; 00058 00059 /* 00060 Monomial evaluation. 00061 in 1D, for point p(x) : x^xDeg 00062 in 2D, for point p(x,y) : x^xDeg * y^yDeg 00063 in 3D, for point p(x,y,z): x^xDeg * y^yDeg * z^zDeg 00064 */ 00065 double computeMonomial(FieldContainer<double> & p, int xDeg, int yDeg=0, int zDeg=0) { 00066 double val = 1.0; 00067 int polydeg[3]; 00068 polydeg[0] = xDeg; polydeg[1] = yDeg; polydeg[2] = zDeg; 00069 for (int i=0; i<p.dimension(0); i++) { 00070 val *= std::pow(p(i),polydeg[i]); 00071 } 00072 return val; 00073 } 00074 00075 00076 /* 00077 Computes integrals of monomials over a given reference cell. 00078 */ 00079 double computeIntegral(shards::CellTopology & cellTopology, int cubDegree, int xDeg, int yDeg, int zDeg) { 00080 00081 DefaultCubatureFactory<double> cubFactory; // create factory 00082 Teuchos::RCP<Cubature<double> > myCub = cubFactory.create(cellTopology, cubDegree); // create default cubature 00083 00084 double val = 0.0; 00085 int cubDim = myCub->getDimension(); 00086 int numCubPoints = myCub->getNumPoints(); 00087 00088 FieldContainer<double> point(cubDim); 00089 FieldContainer<double> cubPoints(numCubPoints, cubDim); 00090 FieldContainer<double> cubWeights(numCubPoints); 00091 00092 myCub->getCubature(cubPoints, cubWeights); 00093 00094 for (int i=0; i<numCubPoints; i++) { 00095 for (int j=0; j<cubDim; j++) { 00096 point(j) = cubPoints(i,j); 00097 } 00098 val += computeMonomial(point, xDeg, yDeg, zDeg)*cubWeights(i); 00099 } 00100 00101 return val; 00102 } 00103 00104 00105 int main(int argc, char *argv[]) { 00106 00107 Teuchos::GlobalMPISession mpiSession(&argc, &argv); 00108 00109 // This little trick lets us print to std::cout only if 00110 // a (dummy) command-line argument is provided. 00111 int iprint = argc - 1; 00112 Teuchos::RCP<std::ostream> outStream; 00113 Teuchos::oblackholestream bhs; // outputs nothing 00114 if (iprint > 0) 00115 outStream = Teuchos::rcp(&std::cout, false); 00116 else 00117 outStream = Teuchos::rcp(&bhs, false); 00118 00119 // Save the format state of the original std::cout. 00120 Teuchos::oblackholestream oldFormatState; 00121 oldFormatState.copyfmt(std::cout); 00122 00123 *outStream \ 00124 << "===============================================================================\n" \ 00125 << "| |\n" \ 00126 << "| Unit Test (CubatureDirect,CubatureTensor,DefaultCubatureFactory) |\n" \ 00127 << "| |\n" \ 00128 << "| 1) Computing integrals of monomials on reference cells in 3D |\n" \ 00129 << "| - no BLAS, i.e. standard addition loops - |\n" \ 00130 << "| |\n" \ 00131 << "| Questions? Contact Pavel Bochev (pbboche@sandia.gov) or |\n" \ 00132 << "| Denis Ridzal (dridzal@sandia.gov). |\n" \ 00133 << "| |\n" \ 00134 << "| Intrepid's website: http://trilinos.sandia.gov/packages/intrepid |\n" \ 00135 << "| Trilinos website: http://trilinos.sandia.gov |\n" \ 00136 << "| |\n" \ 00137 << "===============================================================================\n"\ 00138 << "| TEST 1: integrals of monomials in 3D (non-BLAS version) |\n"\ 00139 << "===============================================================================\n"; 00140 00141 // internal variables: 00142 int errorFlag = 0; 00143 int polyCt = 0; 00144 int offset = 0; 00145 Teuchos::Array< Teuchos::Array<double> > testInt; 00146 Teuchos::Array< Teuchos::Array<double> > analyticInt; 00147 Teuchos::Array<double> tmparray(1); 00148 double reltol = 1.0e+04 * INTREPID_TOL; 00149 int maxDeg[3]; 00150 int maxOffset[3]; 00151 int numPoly[3]; 00152 int numAnalytic[3]; 00153 // max polynomial degree tested, per cell type: 00154 maxDeg[0] = INTREPID_CUBATURE_TET_DEFAULT_MAX; 00155 maxDeg[1] = 20; // can be as large as INTREPID_CUBATURE_LINE_GAUSS_MAX, but runtime is excessive 00156 maxDeg[2] = INTREPID_CUBATURE_TRI_DEFAULT_MAX; 00157 // max polynomial degree recorded in analytic comparison files, per cell type: 00158 maxOffset[0] = INTREPID_CUBATURE_TET_DEFAULT_MAX; 00159 maxOffset[1] = INTREPID_CUBATURE_LINE_GAUSS_MAX; 00160 maxOffset[2] = INTREPID_CUBATURE_TRI_DEFAULT_MAX; 00161 for (int i=0; i<3; i++) { 00162 numPoly[i] = (maxDeg[i]+1)*(maxDeg[i]+2)*(maxDeg[i]+3)/6; 00163 } 00164 for (int i=0; i<3; i++) { 00165 numAnalytic[i] = (maxOffset[i]+1)*(maxOffset[i]+2)*(maxOffset[i]+3)/6; 00166 } 00167 00168 // get names of files with analytic values 00169 std::string basedir = "./data"; 00170 std::stringstream namestream[3]; 00171 std::string filename[3]; 00172 namestream[0] << basedir << "/TET_integrals" << ".dat"; 00173 namestream[0] >> filename[0]; 00174 namestream[1] << basedir << "/HEX_integrals" << ".dat"; 00175 namestream[1] >> filename[1]; 00176 namestream[2] << basedir << "/TRIPRISM_integrals" << ".dat"; 00177 namestream[2] >> filename[2]; 00178 00179 // reference cells tested 00180 shards::CellTopology cellType[] = {shards::getCellTopologyData< shards::Tetrahedron<> >(), 00181 shards::getCellTopologyData< shards::Hexahedron<> >(), 00182 shards::getCellTopologyData< shards::Wedge<> >()}; 00183 // format of data files with analytic values 00184 TypeOfExactData dataFormat[] = {INTREPID_UTILS_SCALAR, INTREPID_UTILS_FRACTION, INTREPID_UTILS_FRACTION}; 00185 00186 // compute and compare integrals 00187 try { 00188 for (int cellCt=0; cellCt < 3; cellCt++) { 00189 testInt.assign(numPoly[cellCt], tmparray); 00190 analyticInt.assign(numAnalytic[cellCt], tmparray); 00191 *outStream << "\nIntegrals of monomials on a reference " << cellType[cellCt].getBaseCellTopologyData()->name << ":\n"; 00192 std::ifstream filecompare(&filename[cellCt][0]); 00193 // compute integrals 00194 for (int cubDeg=0; cubDeg <= maxDeg[cellCt]; cubDeg++) { 00195 polyCt = 0; 00196 testInt[cubDeg].resize((cubDeg+1)*(cubDeg+2)*(cubDeg+3)/6); 00197 for (int xDeg=0; xDeg <= cubDeg; xDeg++) { 00198 for (int yDeg=0; yDeg <= cubDeg-xDeg; yDeg++) { 00199 for (int zDeg=0; zDeg <= cubDeg-xDeg-yDeg; zDeg++) { 00200 testInt[cubDeg][polyCt] = computeIntegral(cellType[cellCt], cubDeg, xDeg, yDeg, zDeg); 00201 polyCt++; 00202 } 00203 } 00204 } 00205 } 00206 // get analytic values 00207 if (filecompare.is_open()) { 00208 getAnalytic(analyticInt, filecompare, dataFormat[cellCt]); 00209 // close file 00210 filecompare.close(); 00211 } 00212 // perform comparison 00213 for (int cubDeg=0; cubDeg <= maxDeg[cellCt]; cubDeg++) { 00214 polyCt = 0; 00215 offset = 0; 00216 int oldErrorFlag = errorFlag; 00217 for (int xDeg=0; xDeg <= cubDeg; xDeg++) { 00218 for (int yDeg=0; yDeg <= cubDeg-xDeg; yDeg++) { 00219 for (int zDeg=0; zDeg <= cubDeg-xDeg-yDeg; zDeg++) { 00220 double abstol = ( analyticInt[polyCt+offset][0] == 0.0 ? reltol : std::fabs(reltol*analyticInt[polyCt+offset][0]) ); 00221 double absdiff = std::fabs(analyticInt[polyCt+offset][0] - testInt[cubDeg][polyCt]); 00222 if (absdiff > abstol) { 00223 *outStream << "Cubature order " << std::setw(2) << std::left << cubDeg << " integrating " 00224 << "x^" << std::setw(2) << std::left << xDeg << " * y^" << std::setw(2) << yDeg 00225 << " * z^" << std::setw(2) << zDeg << ":" << " " 00226 << std::scientific << std::setprecision(16) 00227 << testInt[cubDeg][polyCt] << " " << analyticInt[polyCt+offset][0] << " " 00228 << std::setprecision(4) << absdiff << " " << "<?" << " " << abstol << "\n"; 00229 errorFlag++; 00230 *outStream << std::right << std::setw(118) << "^^^^---FAILURE!\n"; 00231 } 00232 polyCt++; 00233 } 00234 offset = offset + maxOffset[cellCt] - cubDeg; 00235 } 00236 offset = offset + (maxOffset[cellCt] - cubDeg)*(maxOffset[cellCt] - cubDeg + 1)/2; 00237 } 00238 *outStream << "Cubature order " << std::setw(2) << std::left << cubDeg; 00239 if (errorFlag == oldErrorFlag) 00240 *outStream << " passed.\n"; 00241 else 00242 *outStream << " failed.\n"; 00243 } 00244 *outStream << "\n"; 00245 } // end for cellCt 00246 } 00247 catch (std::logic_error err) { 00248 *outStream << err.what() << "\n"; 00249 errorFlag = -1; 00250 }; 00251 00252 00253 if (errorFlag != 0) 00254 std::cout << "End Result: TEST FAILED\n"; 00255 else 00256 std::cout << "End Result: TEST PASSED\n"; 00257 00258 // reset format state of std::cout 00259 std::cout.copyfmt(oldFormatState); 00260 00261 return errorFlag; 00262 }
1.7.6.1