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207 lines
8.0 KiB
C++
207 lines
8.0 KiB
C++
//
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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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