d675a18a7a
* merged [56162],[56164],[56248],[56622],[56249] into release * added move semantics for dense matrix and vector containers [SVN r56623]
128 lines
4.4 KiB
C++
128 lines
4.4 KiB
C++
/** test move semantics - run with and without BOOST_UBLAS_MOVE_SEMANTICS defined */
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// Copyright Nasos Iliopoulos, Gunter Winkler 2009.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#define BOOST_UBLAS_MOVE_SEMANTICS
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#include <boost/numeric/ublas/vector.hpp>
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#include <boost/numeric/ublas/matrix.hpp>
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#include <boost/numeric/ublas/io.hpp>
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namespace ublas= boost::numeric::ublas;
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std::vector<double> a;
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ublas::vector<double> doubleit(ublas::vector<double> m)
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{
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ublas::vector<double> r;
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r=2.0*m;
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std::cout << "Temporary pointer: " << &r[0] << std::endl;
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return r;
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}
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template <class T,size_t N>
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ublas::bounded_vector<T,N > doubleit(ublas::bounded_vector<T, N> m)
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{
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ublas::bounded_vector<T,N> r;
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r=2.0*m;
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std::cout << "Temporary pointer: " << &r[0] << std::endl;
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return r;
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}
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template <class T,size_t N>
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ublas::c_vector<T,N > doubleit(ublas::c_vector<T, N> m)
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{
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ublas::c_vector<T,N> r;
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r=2.0*m;
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std::cout << "Temporary pointer: " << &r[0] << std::endl;
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return r;
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}
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ublas::matrix<double> doubleit(ublas::matrix<double> m)
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{
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ublas::matrix<double> r;
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r=2.0*m;
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std::cout << "Temporary pointer r: " << &r(0,0) << std::endl;
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return r;
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}
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template <class T,size_t N, size_t M>
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ublas::bounded_matrix<T,N, M > doubleit(ublas::bounded_matrix<T, N, M> m)
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{
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ublas::bounded_matrix<T,N, M> r;
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r=2.0*m;
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std::cout << "Temporary pointer: " << &(r(0,0)) << std::endl;
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return r;
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}
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template <class T,size_t N, size_t M>
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ublas::c_matrix<T,N, M > doubleit(ublas::c_matrix<T, N, M> m)
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{
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ublas::c_matrix<T,N, M> r;
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r=2.0*m;
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std::cout << "Temporary pointer: " << &(r(0,0)) << std::endl;
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return r;
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}
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void test1()
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{
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std::cout << "vector<double> --------------------------------------------------------------------" << std::endl;
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ublas::vector<double> a(ublas::scalar_vector<double>(2,2.0));
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a = doubleit(a);
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std::cout << "Pointer (must be equal to temp. pointer if move semantics are enabled) : " << &a[0] << std::endl;
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std::cout << a << std::endl;
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std::cout << "bounded_vector<double,2> --------------------------------------------------------------------" << std::endl;
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ublas::bounded_vector<double,2> b(ublas::scalar_vector<double>(2,2.0));
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ublas::bounded_vector<double,2> c;
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noalias(c)=doubleit(b);
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std::cout << "Pointer (bounded_vector swaps by copy this should be different than temp. pointer) : " << &c[0] << std::endl;
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c(1)=0.0;
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std::cout << b << std::endl;
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std::cout << c << std::endl;
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std::cout << "c_vector<double,2> --------------------------------------------------------------------" << std::endl;
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ublas::c_vector<double,2> e=ublas::scalar_vector<double>(2,2.0);
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ublas::c_vector<double,2> f;
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f=doubleit(e);
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std::cout << "Pointer (c_vector swaps by copy this should be different than temp. pointer) : " << &f[0] << std::endl;
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f(1)=0;
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std::cout << e << std::endl;
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std::cout << f << std::endl;
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}
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void test2() {
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std::cout << "matrix<double> --------------------------------------------------------------------" << std::endl;
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ublas::matrix<double> a(ublas::scalar_matrix<double>(2, 3, 2.0));
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a = doubleit(a);
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std::cout << "Pointer (must be equal to temp. pointer if move semantics are enabled) : " << &(a(0,0)) << std::endl;
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std::cout << a << std::endl;
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std::cout << "bounded_matrix<double,2, 3> --------------------------------------------------------------------" << std::endl;
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ublas::bounded_matrix<double,2, 3> b(ublas::scalar_matrix<double>(2,3, 2.0));
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ublas::bounded_matrix<double,2, 3> c;
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noalias(c)=doubleit(b);
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std::cout << "Pointer (bounded_matrix swaps by copy this should be different than temp. pointer) : " << &(c(0,0)) << std::endl;
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c(1,1)=0.0;
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std::cout << b << std::endl;
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std::cout << c << std::endl;
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std::cout << "c_matrix<double,2 ,3> --------------------------------------------------------------------" << std::endl;
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ublas::c_matrix<double,2, 3> e=ublas::scalar_matrix<double>(2,3, 2.0);
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ublas::c_matrix<double,2, 3> f;
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f=doubleit(e);
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std::cout << "Pointer (c_matrix swaps by copy this should be different than temp. pointer) : " << &(f(0,0)) << std::endl;
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f(1,1)=0;
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std::cout << e << std::endl;
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std::cout << f << std::endl;
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}
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int main(){
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test1();
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test2();
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return 0;
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}
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