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test_math.cc
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test_math.cc
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/**
* @file test_math.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Mon Jun 14 2010
* @date last modification: Sun Oct 19 2014
*
* @brief test the static Math class
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014, 2015 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_math.hh"
using namespace akantu;
void checkVect(Real * x, Real * xref, UInt n) {
Real * diff = new Real[n];
for (UInt i = 0; i < n; ++i) {
diff[i] = xref[i] - x[i];
}
Real norm = Math::norm(n, diff) / Math::norm(n, xref);
Real tol = 1e-12;
if (norm > tol) {
std::cout << "differs form xref of " << std::scientific << norm << std::endl;
exit(-1);
}
delete [] diff;
}
/* -------------------------------------------------------------------------- */
int main() {
Real A[3 * 5] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
};
Real x1[5] = {0, 1, 2, 3, 4};
Real x2[3] = {0, 1, 2};
Real y1[3];
Math::matrix_vector(3, 5, A, x1, y1, 1.);
Real y1_ref[3] = {90, 100, 110};
checkVect(y1, y1_ref, 3);
Real y2[5];
Math::matVectMul<true>(3, 5, 1., A, x2, 0., y2);
Real y2_ref[5] = {5, 14, 23, 32, 41};
checkVect(y2, y2_ref, 5);
return 0;
}

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