mirror of
https://github.com/triqs/dft_tools
synced 2024-11-01 03:33:50 +01:00
e6234ed3d5
- the conj_ function was not written properly (T is a ref, the trait is_complex was not returning true). - a simpler version is clearly better !
76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
/*******************************************************************************
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*
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* TRIQS: a Toolbox for Research in Interacting Quantum Systems
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*
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* Copyright (C) 2011 by O. Parcollet
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*
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* TRIQS is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* TRIQS. If not, see <http://www.gnu.org/licenses/>.
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*
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******************************************************************************/
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#include "./common.hpp"
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#include <iostream>
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#include <triqs/arrays/array.hpp>
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#include <triqs/arrays/vector.hpp>
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#include <triqs/arrays/matrix.hpp>
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#include <triqs/arrays/blas_lapack/dot.hpp>
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#include <triqs/arrays/asserts.hpp>
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using namespace triqs::arrays;
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template<typename Vd, typename Vi>
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void test() {
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Vd a(2),aa(2),c(2) ;a()=2.0; c() = 1;
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Vi b(2);b()=3;
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std::cerr << blas::dot<false>(a,b) << std::endl;
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aa = 2*a;
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assert_close( dot(a,b), 12);
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assert_close( dot(aa,a), 16);
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assert_close( dot(aa,b), 24);
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assert_close( dot(aa-a,b), 12);
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std::cerr << dot(aa,a) << std::endl ;
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std::cerr << dot(aa,b) << std::endl ;
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std::cerr << dot(aa-a, b) << std::endl;
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std::cerr<< "---------------------"<<std::endl;
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}
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int main(int argc, char **argv) {
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test<vector<double> , vector<int> >();
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/// Added by I. Krivenko, #122
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/// test the complex version, specially with the zdotu workaround on Os X.
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vector<std::complex<double>> v(2);
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v(0) = 0;
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v(1) = {0, 1};
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std::cerr << v << std::endl;
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std::cerr << blas::dot<false>(v, v) << std::endl;
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std::cerr << blas::dot<true>(v, v) << std::endl;
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assert_close( dot(v,v), -1);
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assert_close( dotc(v,v), 1);
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// does not work for array just because of .size() vs .shape(0)...
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//test<array<double,1> , array<int,1> >();
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//test<array<double,1> , vector<int> >();
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//test<vector<double> , array<int,1> >();
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}
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