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272 lines
12 KiB
C++
272 lines
12 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_AUXILIARY_LARRB_HPP
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#define BOOST_NUMERIC_BINDINGS_LAPACK_AUXILIARY_LARRB_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/detail/array.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/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 larrb 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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inline std::ptrdiff_t larrb( const fortran_int_t n, const float* d,
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const float* lld, const fortran_int_t ifirst,
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const fortran_int_t ilast, const float rtol1, const float rtol2,
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const fortran_int_t offset, float* w, float* wgap, float* werr,
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float* work, fortran_int_t* iwork, const float pivmin,
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const float spdiam, const fortran_int_t twist ) {
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fortran_int_t info(0);
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LAPACK_SLARRB( &n, d, lld, &ifirst, &ilast, &rtol1, &rtol2, &offset, w,
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wgap, werr, work, iwork, &pivmin, &spdiam, &twist, &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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inline std::ptrdiff_t larrb( const fortran_int_t n, const double* d,
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const double* lld, const fortran_int_t ifirst,
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const fortran_int_t ilast, const double rtol1, const double rtol2,
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const fortran_int_t offset, double* w, double* wgap, double* werr,
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double* work, fortran_int_t* iwork, const double pivmin,
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const double spdiam, const fortran_int_t twist ) {
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fortran_int_t info(0);
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LAPACK_DLARRB( &n, d, lld, &ifirst, &ilast, &rtol1, &rtol2, &offset, w,
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wgap, werr, work, iwork, &pivmin, &spdiam, &twist, &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 larrb.
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//
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template< typename Value >
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struct larrb_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 VectorD, typename VectorLLD, typename VectorW,
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typename VectorWGAP, typename VectorWERR, typename WORK,
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typename IWORK >
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static std::ptrdiff_t invoke( const fortran_int_t n, const VectorD& d,
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const VectorLLD& lld, const fortran_int_t ifirst,
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const fortran_int_t ilast, const real_type rtol1,
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const real_type rtol2, const fortran_int_t offset, VectorW& w,
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VectorWGAP& wgap, VectorWERR& werr, const real_type pivmin,
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const real_type spdiam, const fortran_int_t twist,
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detail::workspace2< WORK, IWORK > work ) {
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namespace bindings = ::boost::numeric::bindings;
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const<
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typename bindings::value_type< VectorD >::type >::type,
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typename remove_const< typename bindings::value_type<
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VectorLLD >::type >::type >::value) );
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const<
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typename bindings::value_type< VectorD >::type >::type,
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typename remove_const< typename bindings::value_type<
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VectorW >::type >::type >::value) );
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const<
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typename bindings::value_type< VectorD >::type >::type,
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typename remove_const< typename bindings::value_type<
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VectorWGAP >::type >::type >::value) );
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BOOST_STATIC_ASSERT( (boost::is_same< typename remove_const<
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typename bindings::value_type< VectorD >::type >::type,
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typename remove_const< typename bindings::value_type<
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VectorWERR >::type >::type >::value) );
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BOOST_STATIC_ASSERT( (bindings::is_mutable< VectorW >::value) );
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BOOST_STATIC_ASSERT( (bindings::is_mutable< VectorWGAP >::value) );
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BOOST_STATIC_ASSERT( (bindings::is_mutable< VectorWERR >::value) );
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BOOST_ASSERT( bindings::size(d) >= n );
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BOOST_ASSERT( bindings::size(lld) >= n-1 );
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BOOST_ASSERT( bindings::size(w) >= n );
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BOOST_ASSERT( bindings::size(werr) >= n );
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BOOST_ASSERT( bindings::size(work.select(fortran_int_t())) >=
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min_size_iwork( n ));
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BOOST_ASSERT( bindings::size(work.select(real_type())) >=
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min_size_work( n ));
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return detail::larrb( n, bindings::begin_value(d),
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bindings::begin_value(lld), ifirst, ilast, rtol1, rtol2,
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offset, bindings::begin_value(w), bindings::begin_value(wgap),
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bindings::begin_value(werr),
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bindings::begin_value(work.select(real_type())),
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bindings::begin_value(work.select(fortran_int_t())),
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pivmin, spdiam, twist );
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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 VectorD, typename VectorLLD, typename VectorW,
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typename VectorWGAP, typename VectorWERR >
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static std::ptrdiff_t invoke( const fortran_int_t n, const VectorD& d,
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const VectorLLD& lld, const fortran_int_t ifirst,
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const fortran_int_t ilast, const real_type rtol1,
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const real_type rtol2, const fortran_int_t offset, VectorW& w,
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VectorWGAP& wgap, VectorWERR& werr, const real_type pivmin,
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const real_type spdiam, const fortran_int_t twist,
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minimal_workspace ) {
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namespace bindings = ::boost::numeric::bindings;
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bindings::detail::array< real_type > tmp_work( min_size_work( n ) );
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bindings::detail::array< fortran_int_t > tmp_iwork(
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min_size_iwork( n ) );
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return invoke( n, d, lld, ifirst, ilast, rtol1, rtol2, offset, w,
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wgap, werr, pivmin, spdiam, twist, workspace( tmp_work,
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tmp_iwork ) );
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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 VectorD, typename VectorLLD, typename VectorW,
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typename VectorWGAP, typename VectorWERR >
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static std::ptrdiff_t invoke( const fortran_int_t n, const VectorD& d,
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const VectorLLD& lld, const fortran_int_t ifirst,
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const fortran_int_t ilast, const real_type rtol1,
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const real_type rtol2, const fortran_int_t offset, VectorW& w,
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VectorWGAP& wgap, VectorWERR& werr, const real_type pivmin,
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const real_type spdiam, const fortran_int_t twist,
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optimal_workspace ) {
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namespace bindings = ::boost::numeric::bindings;
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return invoke( n, d, lld, ifirst, ilast, rtol1, rtol2, offset, w,
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wgap, werr, pivmin, spdiam, twist, minimal_workspace() );
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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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static std::ptrdiff_t min_size_work( const std::ptrdiff_t n ) {
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return 2*n;
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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 iwork.
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//
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static std::ptrdiff_t min_size_iwork( const std::ptrdiff_t n ) {
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return 2*n;
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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 larrb_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 larrb. Its overload differs for
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// * User-defined workspace
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//
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template< typename VectorD, typename VectorLLD, typename VectorW,
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typename VectorWGAP, typename VectorWERR, 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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larrb( const fortran_int_t n, const VectorD& d, const VectorLLD& lld,
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const fortran_int_t ifirst, const fortran_int_t ilast,
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const typename remove_imaginary< typename bindings::value_type<
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VectorD >::type >::type rtol1, const typename remove_imaginary<
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typename bindings::value_type< VectorD >::type >::type rtol2,
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const fortran_int_t offset, VectorW& w, VectorWGAP& wgap,
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VectorWERR& werr, const typename remove_imaginary<
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typename bindings::value_type< VectorD >::type >::type pivmin,
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const typename remove_imaginary< typename bindings::value_type<
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VectorD >::type >::type spdiam, const fortran_int_t twist,
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Workspace work ) {
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return larrb_impl< typename bindings::value_type<
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VectorD >::type >::invoke( n, d, lld, ifirst, ilast, rtol1, rtol2,
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offset, w, wgap, werr, pivmin, spdiam, twist, work );
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}
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//
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// Overloaded function for larrb. Its overload differs for
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// * Default workspace-type (optimal)
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//
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template< typename VectorD, typename VectorLLD, typename VectorW,
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typename VectorWGAP, typename VectorWERR >
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inline typename boost::disable_if< detail::is_workspace< VectorWERR >,
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std::ptrdiff_t >::type
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larrb( const fortran_int_t n, const VectorD& d, const VectorLLD& lld,
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const fortran_int_t ifirst, const fortran_int_t ilast,
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const typename remove_imaginary< typename bindings::value_type<
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VectorD >::type >::type rtol1, const typename remove_imaginary<
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typename bindings::value_type< VectorD >::type >::type rtol2,
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const fortran_int_t offset, VectorW& w, VectorWGAP& wgap,
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VectorWERR& werr, const typename remove_imaginary<
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typename bindings::value_type< VectorD >::type >::type pivmin,
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const typename remove_imaginary< typename bindings::value_type<
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VectorD >::type >::type spdiam, const fortran_int_t twist ) {
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return larrb_impl< typename bindings::value_type<
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VectorD >::type >::invoke( n, d, lld, ifirst, ilast, rtol1, rtol2,
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offset, w, wgap, werr, pivmin, spdiam, twist,
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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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