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254 lines
10 KiB
254 lines
10 KiB
// |
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// Copyright (c) 2002--2010 |
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// Toon Knapen, Karl Meerbergen, Kresimir Fresl, |
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// Thomas Klimpel and Rutger ter Borg |
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// |
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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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// |
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// THIS FILE IS AUTOMATICALLY GENERATED |
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// PLEASE DO NOT EDIT! |
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// |
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#ifndef BOOST_NUMERIC_BINDINGS_LAPACK_COMPUTATIONAL_TRSEN_HPP |
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#define BOOST_NUMERIC_BINDINGS_LAPACK_COMPUTATIONAL_TRSEN_HPP |
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#include <boost/assert.hpp> |
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#include <boost/numeric/bindings/begin.hpp> |
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#include <boost/numeric/bindings/detail/array.hpp> |
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#include <boost/numeric/bindings/is_column_major.hpp> |
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#include <boost/numeric/bindings/is_mutable.hpp> |
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#include <boost/numeric/bindings/lapack/workspace.hpp> |
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#include <boost/numeric/bindings/remove_imaginary.hpp> |
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#include <boost/numeric/bindings/size.hpp> |
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#include <boost/numeric/bindings/stride.hpp> |
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#include <boost/numeric/bindings/traits/detail/utils.hpp> |
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#include <boost/numeric/bindings/value_type.hpp> |
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#include <boost/static_assert.hpp> |
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#include <boost/type_traits/is_same.hpp> |
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#include <boost/type_traits/remove_const.hpp> |
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// |
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// The LAPACK-backend for trsen is the netlib-compatible backend. |
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// |
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#include <boost/numeric/bindings/lapack/detail/lapack.h> |
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#include <boost/numeric/bindings/lapack/detail/lapack_option.hpp> |
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namespace boost { |
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namespace numeric { |
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namespace bindings { |
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namespace lapack { |
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// |
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// The detail namespace contains value-type-overloaded functions that |
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// dispatch to the appropriate back-end LAPACK-routine. |
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// |
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namespace detail { |
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// |
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// Overloaded function for dispatching to |
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// * netlib-compatible LAPACK backend (the default), and |
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// * complex<float> value-type. |
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// |
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inline std::ptrdiff_t trsen( const char job, const char compq, |
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const fortran_bool_t* select, const fortran_int_t n, |
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std::complex<float>* t, const fortran_int_t ldt, |
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std::complex<float>* q, const fortran_int_t ldq, |
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std::complex<float>* w, fortran_int_t& m, float& s, float& sep, |
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std::complex<float>* work, const fortran_int_t lwork ) { |
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fortran_int_t info(0); |
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LAPACK_CTRSEN( &job, &compq, select, &n, t, &ldt, q, &ldq, w, &m, &s, |
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&sep, work, &lwork, &info ); |
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return info; |
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} |
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// |
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// Overloaded function for dispatching to |
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// * netlib-compatible LAPACK backend (the default), and |
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// * complex<double> value-type. |
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// |
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inline std::ptrdiff_t trsen( const char job, const char compq, |
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const fortran_bool_t* select, const fortran_int_t n, |
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std::complex<double>* t, const fortran_int_t ldt, |
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std::complex<double>* q, const fortran_int_t ldq, |
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std::complex<double>* w, fortran_int_t& m, double& s, double& sep, |
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std::complex<double>* work, const fortran_int_t lwork ) { |
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fortran_int_t info(0); |
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LAPACK_ZTRSEN( &job, &compq, select, &n, t, &ldt, q, &ldq, w, &m, &s, |
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&sep, work, &lwork, &info ); |
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return info; |
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} |
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} // namespace detail |
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// |
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// Value-type based template class. Use this class if you need a type |
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// for dispatching to trsen. |
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// |
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template< typename Value > |
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struct trsen_impl { |
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typedef Value value_type; |
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typedef typename remove_imaginary< Value >::type real_type; |
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// |
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// Static member function for user-defined workspaces, that |
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// * Deduces the required arguments for dispatching to LAPACK, and |
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// * Asserts that most arguments make sense. |
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// |
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template< typename VectorSELECT, typename MatrixT, typename MatrixQ, |
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typename VectorW, typename WORK > |
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static std::ptrdiff_t invoke( const char job, const char compq, |
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const VectorSELECT& select, MatrixT& t, MatrixQ& q, VectorW& w, |
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fortran_int_t& m, real_type& s, real_type& sep, |
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detail::workspace1< WORK > work ) { |
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namespace bindings = ::boost::numeric::bindings; |
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BOOST_STATIC_ASSERT( (bindings::is_column_major< MatrixT >::value) ); |
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BOOST_STATIC_ASSERT( (bindings::is_column_major< MatrixQ >::value) ); |
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
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typename bindings::value_type< MatrixT >::type >::type, |
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typename remove_const< typename bindings::value_type< |
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MatrixQ >::type >::type >::value) ); |
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
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typename bindings::value_type< MatrixT >::type >::type, |
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typename remove_const< typename bindings::value_type< |
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VectorW >::type >::type >::value) ); |
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BOOST_STATIC_ASSERT( (bindings::is_mutable< MatrixT >::value) ); |
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BOOST_STATIC_ASSERT( (bindings::is_mutable< MatrixQ >::value) ); |
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BOOST_STATIC_ASSERT( (bindings::is_mutable< VectorW >::value) ); |
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BOOST_ASSERT( bindings::size(select) >= bindings::size_column(t) ); |
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BOOST_ASSERT( bindings::size(w) >= bindings::size_column(t) ); |
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BOOST_ASSERT( bindings::size(work.select(value_type())) >= |
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min_size_work( job, bindings::size_column(t), m )); |
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BOOST_ASSERT( bindings::size_column(t) >= 0 ); |
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BOOST_ASSERT( bindings::size_minor(q) == 1 || |
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bindings::stride_minor(q) == 1 ); |
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BOOST_ASSERT( bindings::size_minor(t) == 1 || |
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bindings::stride_minor(t) == 1 ); |
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BOOST_ASSERT( bindings::stride_major(t) >= std::max< std::ptrdiff_t >(1, |
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bindings::size_column(t)) ); |
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BOOST_ASSERT( compq == 'V' || compq == 'N' ); |
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BOOST_ASSERT( job == 'N' || job == 'E' || job == 'V' || job == 'B' ); |
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return detail::trsen( job, compq, bindings::begin_value(select), |
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bindings::size_column(t), bindings::begin_value(t), |
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bindings::stride_major(t), bindings::begin_value(q), |
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bindings::stride_major(q), bindings::begin_value(w), m, s, |
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sep, bindings::begin_value(work.select(value_type())), |
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bindings::size(work.select(value_type())) ); |
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} |
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// |
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// Static member function that |
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// * Figures out the minimal workspace requirements, and passes |
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// the results to the user-defined workspace overload of the |
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// invoke static member function |
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// * Enables the unblocked algorithm (BLAS level 2) |
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// |
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template< typename VectorSELECT, typename MatrixT, typename MatrixQ, |
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typename VectorW > |
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static std::ptrdiff_t invoke( const char job, const char compq, |
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const VectorSELECT& select, MatrixT& t, MatrixQ& q, VectorW& w, |
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fortran_int_t& m, real_type& s, real_type& sep, |
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minimal_workspace ) { |
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namespace bindings = ::boost::numeric::bindings; |
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bindings::detail::array< value_type > tmp_work( min_size_work( job, |
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bindings::size_column(t), m ) ); |
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return invoke( job, compq, select, t, q, w, m, s, sep, |
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workspace( tmp_work ) ); |
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} |
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// |
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// Static member function that |
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// * Figures out the optimal workspace requirements, and passes |
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// the results to the user-defined workspace overload of the |
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// invoke static member |
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// * Enables the blocked algorithm (BLAS level 3) |
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// |
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template< typename VectorSELECT, typename MatrixT, typename MatrixQ, |
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typename VectorW > |
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static std::ptrdiff_t invoke( const char job, const char compq, |
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const VectorSELECT& select, MatrixT& t, MatrixQ& q, VectorW& w, |
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fortran_int_t& m, real_type& s, real_type& sep, |
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optimal_workspace ) { |
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namespace bindings = ::boost::numeric::bindings; |
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value_type opt_size_work; |
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detail::trsen( job, compq, bindings::begin_value(select), |
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bindings::size_column(t), bindings::begin_value(t), |
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bindings::stride_major(t), bindings::begin_value(q), |
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bindings::stride_major(q), bindings::begin_value(w), m, s, |
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sep, &opt_size_work, -1 ); |
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bindings::detail::array< value_type > tmp_work( |
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traits::detail::to_int( opt_size_work ) ); |
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return invoke( job, compq, select, t, q, w, m, s, sep, |
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workspace( tmp_work ) ); |
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} |
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// |
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// Static member function that returns the minimum size of |
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// workspace-array work. |
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// |
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static std::ptrdiff_t min_size_work( const char job, const std::ptrdiff_t n, |
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fortran_int_t& m ) { |
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if ( job == 'N' ) |
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return 1; |
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else if ( job == 'E' ) |
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return std::max< std::ptrdiff_t >(1, m*(n-m)); |
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else // if ( job == 'V' || job == 'B' ) |
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return std::max< std::ptrdiff_t >(1, 2*m*(n-m)); |
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} |
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}; |
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// |
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// Functions for direct use. These functions are overloaded for temporaries, |
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// so that wrapped types can still be passed and used for write-access. In |
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// addition, if applicable, they are overloaded for user-defined workspaces. |
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// Calls to these functions are passed to the trsen_impl classes. In the |
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// documentation, most overloads are collapsed to avoid a large number of |
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// prototypes which are very similar. |
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// |
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// |
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// Overloaded function for trsen. Its overload differs for |
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// * User-defined workspace |
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// |
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template< typename VectorSELECT, typename MatrixT, typename MatrixQ, |
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typename VectorW, typename Workspace > |
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inline typename boost::enable_if< detail::is_workspace< Workspace >, |
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std::ptrdiff_t >::type |
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trsen( const char job, const char compq, const VectorSELECT& select, |
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MatrixT& t, MatrixQ& q, VectorW& w, fortran_int_t& m, |
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typename remove_imaginary< typename bindings::value_type< |
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VectorSELECT >::type >::type& s, typename remove_imaginary< |
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typename bindings::value_type< VectorSELECT >::type >::type& sep, |
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Workspace work ) { |
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return trsen_impl< typename bindings::value_type< |
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VectorSELECT >::type >::invoke( job, compq, select, t, q, w, m, s, |
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sep, work ); |
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} |
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// |
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// Overloaded function for trsen. Its overload differs for |
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// * Default workspace-type (optimal) |
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// |
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template< typename VectorSELECT, typename MatrixT, typename MatrixQ, |
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typename VectorW > |
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inline typename boost::disable_if< detail::is_workspace< VectorW >, |
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std::ptrdiff_t >::type |
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trsen( const char job, const char compq, const VectorSELECT& select, |
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MatrixT& t, MatrixQ& q, VectorW& w, fortran_int_t& m, |
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typename remove_imaginary< typename bindings::value_type< |
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VectorSELECT >::type >::type& s, typename remove_imaginary< |
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typename bindings::value_type< VectorSELECT >::type >::type& sep ) { |
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return trsen_impl< typename bindings::value_type< |
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VectorSELECT >::type >::invoke( job, compq, select, t, q, w, m, s, |
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sep, optimal_workspace() ); |
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} |
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} // namespace lapack |
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} // namespace bindings |
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} // namespace numeric |
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} // namespace boost |
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#endif
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