You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
271 lines
12 KiB
271 lines
12 KiB
// |
|
// 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_AUXILIARY_LARRB_HPP |
|
#define BOOST_NUMERIC_BINDINGS_LAPACK_AUXILIARY_LARRB_HPP |
|
|
|
#include <boost/assert.hpp> |
|
#include <boost/numeric/bindings/begin.hpp> |
|
#include <boost/numeric/bindings/detail/array.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/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 larrb 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. |
|
// |
|
inline std::ptrdiff_t larrb( const fortran_int_t n, const float* d, |
|
const float* lld, const fortran_int_t ifirst, |
|
const fortran_int_t ilast, const float rtol1, const float rtol2, |
|
const fortran_int_t offset, float* w, float* wgap, float* werr, |
|
float* work, fortran_int_t* iwork, const float pivmin, |
|
const float spdiam, const fortran_int_t twist ) { |
|
fortran_int_t info(0); |
|
LAPACK_SLARRB( &n, d, lld, &ifirst, &ilast, &rtol1, &rtol2, &offset, w, |
|
wgap, werr, work, iwork, &pivmin, &spdiam, &twist, &info ); |
|
return info; |
|
} |
|
|
|
// |
|
// Overloaded function for dispatching to |
|
// * netlib-compatible LAPACK backend (the default), and |
|
// * double value-type. |
|
// |
|
inline std::ptrdiff_t larrb( const fortran_int_t n, const double* d, |
|
const double* lld, const fortran_int_t ifirst, |
|
const fortran_int_t ilast, const double rtol1, const double rtol2, |
|
const fortran_int_t offset, double* w, double* wgap, double* werr, |
|
double* work, fortran_int_t* iwork, const double pivmin, |
|
const double spdiam, const fortran_int_t twist ) { |
|
fortran_int_t info(0); |
|
LAPACK_DLARRB( &n, d, lld, &ifirst, &ilast, &rtol1, &rtol2, &offset, w, |
|
wgap, werr, work, iwork, &pivmin, &spdiam, &twist, &info ); |
|
return info; |
|
} |
|
|
|
} // namespace detail |
|
|
|
// |
|
// Value-type based template class. Use this class if you need a type |
|
// for dispatching to larrb. |
|
// |
|
template< typename Value > |
|
struct larrb_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 VectorD, typename VectorLLD, typename VectorW, |
|
typename VectorWGAP, typename VectorWERR, typename WORK, |
|
typename IWORK > |
|
static std::ptrdiff_t invoke( const fortran_int_t n, const VectorD& d, |
|
const VectorLLD& lld, const fortran_int_t ifirst, |
|
const fortran_int_t ilast, const real_type rtol1, |
|
const real_type rtol2, const fortran_int_t offset, VectorW& w, |
|
VectorWGAP& wgap, VectorWERR& werr, const real_type pivmin, |
|
const real_type spdiam, const fortran_int_t twist, |
|
detail::workspace2< WORK, IWORK > work ) { |
|
namespace bindings = ::boost::numeric::bindings; |
|
BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
|
typename bindings::value_type< VectorD >::type >::type, |
|
typename remove_const< typename bindings::value_type< |
|
VectorLLD >::type >::type >::value) ); |
|
BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
|
typename bindings::value_type< VectorD >::type >::type, |
|
typename remove_const< typename bindings::value_type< |
|
VectorW >::type >::type >::value) ); |
|
BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
|
typename bindings::value_type< VectorD >::type >::type, |
|
typename remove_const< typename bindings::value_type< |
|
VectorWGAP >::type >::type >::value) ); |
|
BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const< |
|
typename bindings::value_type< VectorD >::type >::type, |
|
typename remove_const< typename bindings::value_type< |
|
VectorWERR >::type >::type >::value) ); |
|
BOOST_STATIC_ASSERT( (bindings::is_mutable< VectorW >::value) ); |
|
BOOST_STATIC_ASSERT( (bindings::is_mutable< VectorWGAP >::value) ); |
|
BOOST_STATIC_ASSERT( (bindings::is_mutable< VectorWERR >::value) ); |
|
BOOST_ASSERT( bindings::size(d) >= n ); |
|
BOOST_ASSERT( bindings::size(lld) >= n-1 ); |
|
BOOST_ASSERT( bindings::size(w) >= n ); |
|
BOOST_ASSERT( bindings::size(werr) >= n ); |
|
BOOST_ASSERT( bindings::size(work.select(fortran_int_t())) >= |
|
min_size_iwork( n )); |
|
BOOST_ASSERT( bindings::size(work.select(real_type())) >= |
|
min_size_work( n )); |
|
return detail::larrb( n, bindings::begin_value(d), |
|
bindings::begin_value(lld), ifirst, ilast, rtol1, rtol2, |
|
offset, bindings::begin_value(w), bindings::begin_value(wgap), |
|
bindings::begin_value(werr), |
|
bindings::begin_value(work.select(real_type())), |
|
bindings::begin_value(work.select(fortran_int_t())), |
|
pivmin, spdiam, twist ); |
|
} |
|
|
|
// |
|
// 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 VectorD, typename VectorLLD, typename VectorW, |
|
typename VectorWGAP, typename VectorWERR > |
|
static std::ptrdiff_t invoke( const fortran_int_t n, const VectorD& d, |
|
const VectorLLD& lld, const fortran_int_t ifirst, |
|
const fortran_int_t ilast, const real_type rtol1, |
|
const real_type rtol2, const fortran_int_t offset, VectorW& w, |
|
VectorWGAP& wgap, VectorWERR& werr, const real_type pivmin, |
|
const real_type spdiam, const fortran_int_t twist, |
|
minimal_workspace ) { |
|
namespace bindings = ::boost::numeric::bindings; |
|
bindings::detail::array< real_type > tmp_work( min_size_work( n ) ); |
|
bindings::detail::array< fortran_int_t > tmp_iwork( |
|
min_size_iwork( n ) ); |
|
return invoke( n, d, lld, ifirst, ilast, rtol1, rtol2, offset, w, |
|
wgap, werr, pivmin, spdiam, twist, workspace( tmp_work, |
|
tmp_iwork ) ); |
|
} |
|
|
|
// |
|
// 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 VectorD, typename VectorLLD, typename VectorW, |
|
typename VectorWGAP, typename VectorWERR > |
|
static std::ptrdiff_t invoke( const fortran_int_t n, const VectorD& d, |
|
const VectorLLD& lld, const fortran_int_t ifirst, |
|
const fortran_int_t ilast, const real_type rtol1, |
|
const real_type rtol2, const fortran_int_t offset, VectorW& w, |
|
VectorWGAP& wgap, VectorWERR& werr, const real_type pivmin, |
|
const real_type spdiam, const fortran_int_t twist, |
|
optimal_workspace ) { |
|
namespace bindings = ::boost::numeric::bindings; |
|
return invoke( n, d, lld, ifirst, ilast, rtol1, rtol2, offset, w, |
|
wgap, werr, pivmin, spdiam, twist, minimal_workspace() ); |
|
} |
|
|
|
// |
|
// Static member function that returns the minimum size of |
|
// workspace-array work. |
|
// |
|
static std::ptrdiff_t min_size_work( const std::ptrdiff_t n ) { |
|
return 2*n; |
|
} |
|
|
|
// |
|
// Static member function that returns the minimum size of |
|
// workspace-array iwork. |
|
// |
|
static std::ptrdiff_t min_size_iwork( const std::ptrdiff_t n ) { |
|
return 2*n; |
|
} |
|
}; |
|
|
|
|
|
// |
|
// 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 larrb_impl classes. In the |
|
// documentation, most overloads are collapsed to avoid a large number of |
|
// prototypes which are very similar. |
|
// |
|
|
|
// |
|
// Overloaded function for larrb. Its overload differs for |
|
// * User-defined workspace |
|
// |
|
template< typename VectorD, typename VectorLLD, typename VectorW, |
|
typename VectorWGAP, typename VectorWERR, typename Workspace > |
|
inline typename boost::enable_if< detail::is_workspace< Workspace >, |
|
std::ptrdiff_t >::type |
|
larrb( const fortran_int_t n, const VectorD& d, const VectorLLD& lld, |
|
const fortran_int_t ifirst, const fortran_int_t ilast, |
|
const typename remove_imaginary< typename bindings::value_type< |
|
VectorD >::type >::type rtol1, const typename remove_imaginary< |
|
typename bindings::value_type< VectorD >::type >::type rtol2, |
|
const fortran_int_t offset, VectorW& w, VectorWGAP& wgap, |
|
VectorWERR& werr, const typename remove_imaginary< |
|
typename bindings::value_type< VectorD >::type >::type pivmin, |
|
const typename remove_imaginary< typename bindings::value_type< |
|
VectorD >::type >::type spdiam, const fortran_int_t twist, |
|
Workspace work ) { |
|
return larrb_impl< typename bindings::value_type< |
|
VectorD >::type >::invoke( n, d, lld, ifirst, ilast, rtol1, rtol2, |
|
offset, w, wgap, werr, pivmin, spdiam, twist, work ); |
|
} |
|
|
|
// |
|
// Overloaded function for larrb. Its overload differs for |
|
// * Default workspace-type (optimal) |
|
// |
|
template< typename VectorD, typename VectorLLD, typename VectorW, |
|
typename VectorWGAP, typename VectorWERR > |
|
inline typename boost::disable_if< detail::is_workspace< VectorWERR >, |
|
std::ptrdiff_t >::type |
|
larrb( const fortran_int_t n, const VectorD& d, const VectorLLD& lld, |
|
const fortran_int_t ifirst, const fortran_int_t ilast, |
|
const typename remove_imaginary< typename bindings::value_type< |
|
VectorD >::type >::type rtol1, const typename remove_imaginary< |
|
typename bindings::value_type< VectorD >::type >::type rtol2, |
|
const fortran_int_t offset, VectorW& w, VectorWGAP& wgap, |
|
VectorWERR& werr, const typename remove_imaginary< |
|
typename bindings::value_type< VectorD >::type >::type pivmin, |
|
const typename remove_imaginary< typename bindings::value_type< |
|
VectorD >::type >::type spdiam, const fortran_int_t twist ) { |
|
return larrb_impl< typename bindings::value_type< |
|
VectorD >::type >::invoke( n, d, lld, ifirst, ilast, rtol1, rtol2, |
|
offset, w, wgap, werr, pivmin, spdiam, twist, |
|
optimal_workspace() ); |
|
} |
|
|
|
} // namespace lapack |
|
} // namespace bindings |
|
} // namespace numeric |
|
} // namespace boost |
|
|
|
#endif
|
|
|