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52 lines
1.1 KiB
C++
52 lines
1.1 KiB
C++
/*
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Copyright 2020 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License, Version 1.0.
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(http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/config.hpp>
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#if !defined(BOOST_NO_CXX11_ALLOCATOR)
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#include <boost/numeric/ublas/matrix.hpp>
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#include <new>
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template<class T>
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struct Allocator {
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typedef T value_type;
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Allocator() BOOST_NOEXCEPT { }
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template<class U>
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Allocator(const Allocator<U>&) BOOST_NOEXCEPT { }
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T* allocate(std::size_t size) {
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return static_cast<T*>(::operator new(sizeof(T) * size));
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}
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void deallocate(T* ptr, std::size_t) {
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::operator delete(ptr);
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}
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};
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template<class T, class U>
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bool operator==(const Allocator<T>&, const Allocator<U>&) BOOST_NOEXCEPT
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{
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return true;
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}
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template<class T, class U>
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bool operator!=(const Allocator<T>&, const Allocator<U>&) BOOST_NOEXCEPT
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{
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return false;
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}
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int main()
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{
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boost::numeric::ublas::matrix<int,
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boost::numeric::ublas::row_major,
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boost::numeric::ublas::unbounded_array<int,
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Allocator<int> > > matrix(4, 4);
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matrix(1, 2) = 3;
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}
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#endif
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