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//
// Copyright (c) 2002--2010
// Toon Knapen, Karl Meerbergen, Kresimir Fresl,
// Thomas Klimpel and Rutger ter Borg
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// THIS FILE IS AUTOMATICALLY GENERATED
// PLEASE DO NOT EDIT!
//
#ifndef BOOST_NUMERIC_BINDINGS_LAPACK_COMPUTATIONAL_OPMTR_HPP
#define BOOST_NUMERIC_BINDINGS_LAPACK_COMPUTATIONAL_OPMTR_HPP
#include <boost/assert.hpp>
#include <boost/numeric/bindings/begin.hpp>
#include <boost/numeric/bindings/detail/array.hpp>
#include <boost/numeric/bindings/detail/if_left.hpp>
#include <boost/numeric/bindings/is_column_major.hpp>
#include <boost/numeric/bindings/is_mutable.hpp>
#include <boost/numeric/bindings/lapack/workspace.hpp>
#include <boost/numeric/bindings/remove_imaginary.hpp>
#include <boost/numeric/bindings/size.hpp>
#include <boost/numeric/bindings/stride.hpp>
#include <boost/numeric/bindings/uplo_tag.hpp>
#include <boost/numeric/bindings/value_type.hpp>
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/type_traits/remove_const.hpp>
//
// The LAPACK-backend for opmtr is the netlib-compatible backend.
//
#include <boost/numeric/bindings/lapack/detail/lapack.h>
#include <boost/numeric/bindings/lapack/detail/lapack_option.hpp>
namespace boost {
namespace numeric {
namespace bindings {
namespace lapack {
//
// The detail namespace contains value-type-overloaded functions that
// dispatch to the appropriate back-end LAPACK-routine.
//
namespace detail {
//
// Overloaded function for dispatching to
// * netlib-compatible LAPACK backend (the default), and
// * float value-type.
//
template< typename Side, typename Trans >
inline std::ptrdiff_t opmtr( const Side, const char uplo, const Trans,
const fortran_int_t m, const fortran_int_t n, const float* ap,
const float* tau, float* c, const fortran_int_t ldc, float* work ) {
fortran_int_t info(0);
LAPACK_SOPMTR( &lapack_option< Side >::value, &uplo, &lapack_option<
Trans >::value, &m, &n, ap, tau, c, &ldc, work, &info );
return info;
}
//
// Overloaded function for dispatching to
// * netlib-compatible LAPACK backend (the default), and
// * double value-type.
//
template< typename Side, typename Trans >
inline std::ptrdiff_t opmtr( const Side, const char uplo, const Trans,
const fortran_int_t m, const fortran_int_t n, const double* ap,
const double* tau, double* c, const fortran_int_t ldc, double* work ) {
fortran_int_t info(0);
LAPACK_DOPMTR( &lapack_option< Side >::value, &uplo, &lapack_option<
Trans >::value, &m, &n, ap, tau, c, &ldc, work, &info );
return info;
}
} // namespace detail
//
// Value-type based template class. Use this class if you need a type
// for dispatching to opmtr.
//
template< typename Value >
struct opmtr_impl {
typedef Value value_type;
typedef typename remove_imaginary< Value >::type real_type;
//
// Static member function for user-defined workspaces, that
// * Deduces the required arguments for dispatching to LAPACK, and
// * Asserts that most arguments make sense.
//
template< typename Side, typename VectorAP, typename VectorTAU,
typename MatrixC, typename WORK >
static std::ptrdiff_t invoke( const Side side, const char uplo,
const VectorAP& ap, const VectorTAU& tau, MatrixC& c,
detail::workspace1< WORK > work ) {
namespace bindings = ::boost::numeric::bindings;
typedef tag::column_major order;
typedef typename result_of::trans_tag< VectorAP, order >::type trans;
BOOST_STATIC_ASSERT( (bindings::is_column_major< MatrixC >::value) );
BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const<
typename bindings::value_type< VectorAP >::type >::type,
typename remove_const< typename bindings::value_type<
VectorTAU >::type >::type >::value) );
BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const<
typename bindings::value_type< VectorAP >::type >::type,
typename remove_const< typename bindings::value_type<
MatrixC >::type >::type >::value) );
BOOST_STATIC_ASSERT( (bindings::is_mutable< MatrixC >::value) );
BOOST_ASSERT( bindings::size(work.select(real_type())) >=
min_size_work( side, bindings::size_row(c),
bindings::size_column(c) ));
BOOST_ASSERT( bindings::size_column(c) >= 0 );
BOOST_ASSERT( bindings::size_minor(c) == 1 ||
bindings::stride_minor(c) == 1 );
BOOST_ASSERT( bindings::size_row(c) >= 0 );
BOOST_ASSERT( bindings::stride_major(c) >= std::max< std::ptrdiff_t >(1,
bindings::size_row(c)) );
return detail::opmtr( side, uplo, trans(), bindings::size_row(c),
bindings::size_column(c), bindings::begin_value(ap),
bindings::begin_value(tau), bindings::begin_value(c),
bindings::stride_major(c),
bindings::begin_value(work.select(real_type())) );
}
//
// Static member function that
// * Figures out the minimal workspace requirements, and passes
// the results to the user-defined workspace overload of the
// invoke static member function
// * Enables the unblocked algorithm (BLAS level 2)
//
template< typename Side, typename VectorAP, typename VectorTAU,
typename MatrixC >
static std::ptrdiff_t invoke( const Side side, const char uplo,
const VectorAP& ap, const VectorTAU& tau, MatrixC& c,
minimal_workspace ) {
namespace bindings = ::boost::numeric::bindings;
typedef tag::column_major order;
typedef typename result_of::trans_tag< VectorAP, order >::type trans;
bindings::detail::array< real_type > tmp_work( min_size_work( side,
bindings::size_row(c), bindings::size_column(c) ) );
return invoke( side, uplo, ap, tau, c, workspace( tmp_work ) );
}
//
// Static member function that
// * Figures out the optimal workspace requirements, and passes
// the results to the user-defined workspace overload of the
// invoke static member
// * Enables the blocked algorithm (BLAS level 3)
//
template< typename Side, typename VectorAP, typename VectorTAU,
typename MatrixC >
static std::ptrdiff_t invoke( const Side side, const char uplo,
const VectorAP& ap, const VectorTAU& tau, MatrixC& c,
optimal_workspace ) {
namespace bindings = ::boost::numeric::bindings;
typedef tag::column_major order;
typedef typename result_of::trans_tag< VectorAP, order >::type trans;
return invoke( side, uplo, ap, tau, c, minimal_workspace() );
}
//
// Static member function that returns the minimum size of
// workspace-array work.
//
template< typename Side >
static std::ptrdiff_t min_size_work( const Side side,
const std::ptrdiff_t m, const std::ptrdiff_t n ) {
return std::max< std::ptrdiff_t >( 1, bindings::detail::if_left( side,
n, m ) );
}
};
//
// Functions for direct use. These functions are overloaded for temporaries,
// so that wrapped types can still be passed and used for write-access. In
// addition, if applicable, they are overloaded for user-defined workspaces.
// Calls to these functions are passed to the opmtr_impl classes. In the
// documentation, most overloads are collapsed to avoid a large number of
// prototypes which are very similar.
//
//
// Overloaded function for opmtr. Its overload differs for
// * User-defined workspace
//
template< typename Side, typename VectorAP, typename VectorTAU,
typename MatrixC, typename Workspace >
inline typename boost::enable_if< detail::is_workspace< Workspace >,
std::ptrdiff_t >::type
opmtr( const Side side, const char uplo, const VectorAP& ap,
const VectorTAU& tau, MatrixC& c, Workspace work ) {
return opmtr_impl< typename bindings::value_type<
VectorAP >::type >::invoke( side, uplo, ap, tau, c, work );
}
//
// Overloaded function for opmtr. Its overload differs for
// * Default workspace-type (optimal)
//
template< typename Side, typename VectorAP, typename VectorTAU,
typename MatrixC >
inline typename boost::disable_if< detail::is_workspace< MatrixC >,
std::ptrdiff_t >::type
opmtr( const Side side, const char uplo, const VectorAP& ap,
const VectorTAU& tau, MatrixC& c ) {
return opmtr_impl< typename bindings::value_type<
VectorAP >::type >::invoke( side, uplo, ap, tau, c,
optimal_workspace() );
}
} // namespace lapack
} // namespace bindings
} // namespace numeric
} // namespace boost
#endif
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