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206 lines
8.0 KiB
206 lines
8.0 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_GTTRS_HPP |
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#define BOOST_NUMERIC_BINDINGS_LAPACK_COMPUTATIONAL_GTTRS_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/is_column_major.hpp> |
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#include <boost/numeric/bindings/is_mutable.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/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 gttrs 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 Trans > |
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inline std::ptrdiff_t gttrs( const Trans, const fortran_int_t n, |
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const fortran_int_t nrhs, const float* dl, const float* d, |
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const float* du, const float* du2, const fortran_int_t* ipiv, |
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float* b, const fortran_int_t ldb ) { |
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fortran_int_t info(0); |
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LAPACK_SGTTRS( &lapack_option< Trans >::value, &n, &nrhs, dl, d, du, du2, |
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ipiv, b, &ldb, &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 Trans > |
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inline std::ptrdiff_t gttrs( const Trans, const fortran_int_t n, |
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const fortran_int_t nrhs, const double* dl, const double* d, |
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const double* du, const double* du2, const fortran_int_t* ipiv, |
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double* b, const fortran_int_t ldb ) { |
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fortran_int_t info(0); |
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LAPACK_DGTTRS( &lapack_option< Trans >::value, &n, &nrhs, dl, d, du, du2, |
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ipiv, b, &ldb, &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<float> value-type. |
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// |
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template< typename Trans > |
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inline std::ptrdiff_t gttrs( const Trans, const fortran_int_t n, |
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const fortran_int_t nrhs, const std::complex<float>* dl, |
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const std::complex<float>* d, const std::complex<float>* du, |
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const std::complex<float>* du2, const fortran_int_t* ipiv, |
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std::complex<float>* b, const fortran_int_t ldb ) { |
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fortran_int_t info(0); |
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LAPACK_CGTTRS( &lapack_option< Trans >::value, &n, &nrhs, dl, d, du, du2, |
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ipiv, b, &ldb, &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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template< typename Trans > |
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inline std::ptrdiff_t gttrs( const Trans, const fortran_int_t n, |
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const fortran_int_t nrhs, const std::complex<double>* dl, |
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const std::complex<double>* d, const std::complex<double>* du, |
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const std::complex<double>* du2, const fortran_int_t* ipiv, |
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std::complex<double>* b, const fortran_int_t ldb ) { |
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fortran_int_t info(0); |
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LAPACK_ZGTTRS( &lapack_option< Trans >::value, &n, &nrhs, dl, d, du, du2, |
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ipiv, b, &ldb, &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 gttrs. |
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// |
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template< typename Value > |
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struct gttrs_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, 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 VectorDL, typename VectorD, typename VectorDU, |
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typename VectorDU2, typename VectorIPIV, typename MatrixB > |
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static std::ptrdiff_t invoke( const VectorDL& dl, const VectorD& d, |
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const VectorDU& du, const VectorDU2& du2, const VectorIPIV& ipiv, |
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MatrixB& b ) { |
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namespace bindings = ::boost::numeric::bindings; |
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typedef tag::column_major order; |
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typedef typename result_of::trans_tag< VectorD, order >::type trans; |
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BOOST_STATIC_ASSERT( (bindings::is_column_major< MatrixB >::value) ); |
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
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typename bindings::value_type< VectorDL >::type >::type, |
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typename remove_const< typename bindings::value_type< |
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VectorD >::type >::type >::value) ); |
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
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typename bindings::value_type< VectorDL >::type >::type, |
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typename remove_const< typename bindings::value_type< |
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VectorDU >::type >::type >::value) ); |
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
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typename bindings::value_type< VectorDL >::type >::type, |
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typename remove_const< typename bindings::value_type< |
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VectorDU2 >::type >::type >::value) ); |
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
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typename bindings::value_type< VectorDL >::type >::type, |
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typename remove_const< typename bindings::value_type< |
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MatrixB >::type >::type >::value) ); |
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BOOST_STATIC_ASSERT( (bindings::is_mutable< MatrixB >::value) ); |
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BOOST_ASSERT( bindings::size(d) >= bindings::size_column_op(d, |
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trans()) ); |
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BOOST_ASSERT( bindings::size(dl) >= bindings::size_column_op(d, |
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trans())-1 ); |
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BOOST_ASSERT( bindings::size(du) >= bindings::size_column_op(d, |
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trans())-1 ); |
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BOOST_ASSERT( bindings::size(du2) >= bindings::size_column_op(d, |
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trans())-2 ); |
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BOOST_ASSERT( bindings::size(ipiv) >= bindings::size_column_op(d, |
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trans()) ); |
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BOOST_ASSERT( bindings::size_column(b) >= 0 ); |
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BOOST_ASSERT( bindings::size_minor(b) == 1 || |
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bindings::stride_minor(b) == 1 ); |
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BOOST_ASSERT( bindings::stride_major(b) >= std::max< std::ptrdiff_t >(1, |
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bindings::size_column_op(d, trans())) ); |
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return detail::gttrs( trans(), bindings::size_column_op(d, trans()), |
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bindings::size_column(b), bindings::begin_value(dl), |
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bindings::begin_value(d), bindings::begin_value(du), |
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bindings::begin_value(du2), bindings::begin_value(ipiv), |
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bindings::begin_value(b), bindings::stride_major(b) ); |
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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 gttrs_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 gttrs. Its overload differs for |
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// |
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template< typename VectorDL, typename VectorD, typename VectorDU, |
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typename VectorDU2, typename VectorIPIV, typename MatrixB > |
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inline std::ptrdiff_t gttrs( const VectorDL& dl, const VectorD& d, |
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const VectorDU& du, const VectorDU2& du2, const VectorIPIV& ipiv, |
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MatrixB& b ) { |
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return gttrs_impl< typename bindings::value_type< |
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VectorDL >::type >::invoke( dl, d, du, du2, ipiv, b ); |
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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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