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242 lines
9.8 KiB
242 lines
9.8 KiB
6 years ago
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//
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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_ORMTR_HPP
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#define BOOST_NUMERIC_BINDINGS_LAPACK_COMPUTATIONAL_ORMTR_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/data_order.hpp>
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#include <boost/numeric/bindings/detail/array.hpp>
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#include <boost/numeric/bindings/detail/if_left.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/trans_tag.hpp>
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#include <boost/numeric/bindings/uplo_tag.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 ormtr 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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// * float value-type.
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//
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template< typename Side, typename UpLo, typename Trans >
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inline std::ptrdiff_t ormtr( const Side, const UpLo, const Trans,
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const fortran_int_t m, const fortran_int_t n, const float* a,
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const fortran_int_t lda, const float* tau, float* c,
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const fortran_int_t ldc, float* work, const fortran_int_t lwork ) {
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fortran_int_t info(0);
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LAPACK_SORMTR( &lapack_option< Side >::value, &lapack_option<
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UpLo >::value, &lapack_option< Trans >::value, &m, &n, a, &lda,
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tau, c, &ldc, 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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// * double value-type.
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//
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template< typename Side, typename UpLo, typename Trans >
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inline std::ptrdiff_t ormtr( const Side, const UpLo, const Trans,
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const fortran_int_t m, const fortran_int_t n, const double* a,
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const fortran_int_t lda, const double* tau, double* c,
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const fortran_int_t ldc, double* work, const fortran_int_t lwork ) {
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fortran_int_t info(0);
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LAPACK_DORMTR( &lapack_option< Side >::value, &lapack_option<
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UpLo >::value, &lapack_option< Trans >::value, &m, &n, a, &lda,
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tau, c, &ldc, 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 ormtr.
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//
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template< typename Value >
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struct ormtr_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 Side, typename MatrixA, typename VectorTAU,
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typename MatrixC, typename WORK >
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static std::ptrdiff_t invoke( const Side side, const MatrixA& a,
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const VectorTAU& tau, MatrixC& c, detail::workspace1<
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WORK > work ) {
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namespace bindings = ::boost::numeric::bindings;
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typedef typename result_of::data_order< MatrixC >::type order;
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typedef typename result_of::trans_tag< MatrixA, order >::type trans;
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typedef typename result_of::uplo_tag< MatrixA, trans >::type uplo;
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const<
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typename bindings::value_type< MatrixA >::type >::type,
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typename remove_const< typename bindings::value_type<
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VectorTAU >::type >::type >::value) );
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const<
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typename bindings::value_type< MatrixA >::type >::type,
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typename remove_const< typename bindings::value_type<
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MatrixC >::type >::type >::value) );
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BOOST_STATIC_ASSERT( (bindings::is_mutable< MatrixC >::value) );
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BOOST_ASSERT( bindings::size(work.select(real_type())) >=
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min_size_work( side, bindings::size_row(c),
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bindings::size_column(c) ));
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BOOST_ASSERT( bindings::size_column(c) >= 0 );
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BOOST_ASSERT( bindings::size_minor(a) == 1 ||
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bindings::stride_minor(a) == 1 );
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BOOST_ASSERT( bindings::size_minor(c) == 1 ||
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bindings::stride_minor(c) == 1 );
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BOOST_ASSERT( bindings::size_row(c) >= 0 );
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BOOST_ASSERT( bindings::stride_major(c) >= std::max< std::ptrdiff_t >(1,
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bindings::size_row(c)) );
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return detail::ormtr( side, uplo(), trans(), bindings::size_row(c),
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bindings::size_column(c), bindings::begin_value(a),
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bindings::stride_major(a), bindings::begin_value(tau),
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bindings::begin_value(c), bindings::stride_major(c),
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bindings::begin_value(work.select(real_type())),
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bindings::size(work.select(real_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 Side, typename MatrixA, typename VectorTAU,
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typename MatrixC >
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static std::ptrdiff_t invoke( const Side side, const MatrixA& a,
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const VectorTAU& tau, MatrixC& c, minimal_workspace ) {
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namespace bindings = ::boost::numeric::bindings;
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typedef typename result_of::data_order< MatrixC >::type order;
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typedef typename result_of::trans_tag< MatrixA, order >::type trans;
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typedef typename result_of::uplo_tag< MatrixA, trans >::type uplo;
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bindings::detail::array< real_type > tmp_work( min_size_work( side,
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bindings::size_row(c), bindings::size_column(c) ) );
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return invoke( side, a, tau, c, 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 Side, typename MatrixA, typename VectorTAU,
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typename MatrixC >
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static std::ptrdiff_t invoke( const Side side, const MatrixA& a,
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const VectorTAU& tau, MatrixC& c, optimal_workspace ) {
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namespace bindings = ::boost::numeric::bindings;
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typedef typename result_of::data_order< MatrixC >::type order;
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typedef typename result_of::trans_tag< MatrixA, order >::type trans;
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typedef typename result_of::uplo_tag< MatrixA, trans >::type uplo;
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real_type opt_size_work;
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detail::ormtr( side, uplo(), trans(), bindings::size_row(c),
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bindings::size_column(c), bindings::begin_value(a),
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bindings::stride_major(a), bindings::begin_value(tau),
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bindings::begin_value(c), bindings::stride_major(c),
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&opt_size_work, -1 );
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bindings::detail::array< real_type > tmp_work(
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traits::detail::to_int( opt_size_work ) );
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return invoke( side, a, tau, c, 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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template< typename Side >
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static std::ptrdiff_t min_size_work( const Side side,
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const std::ptrdiff_t m, const std::ptrdiff_t n ) {
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return std::max< std::ptrdiff_t >( 1, bindings::detail::if_left( side,
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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 ormtr_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 ormtr. Its overload differs for
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// * User-defined workspace
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//
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template< typename Side, typename MatrixA, typename VectorTAU,
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typename MatrixC, 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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ormtr( const Side side, const MatrixA& a, const VectorTAU& tau,
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MatrixC& c, Workspace work ) {
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return ormtr_impl< typename bindings::value_type<
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MatrixA >::type >::invoke( side, a, tau, c, work );
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}
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//
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// Overloaded function for ormtr. Its overload differs for
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// * Default workspace-type (optimal)
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//
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template< typename Side, typename MatrixA, typename VectorTAU,
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typename MatrixC >
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inline typename boost::disable_if< detail::is_workspace< MatrixC >,
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std::ptrdiff_t >::type
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ormtr( const Side side, const MatrixA& a, const VectorTAU& tau,
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MatrixC& c ) {
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return ormtr_impl< typename bindings::value_type<
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MatrixA >::type >::invoke( side, a, tau, c, 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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