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296 lines
10 KiB
296 lines
10 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_AUXILIARY_LACON_HPP |
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#define BOOST_NUMERIC_BINDINGS_LAPACK_AUXILIARY_LACON_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_complex.hpp> |
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#include <boost/numeric/bindings/is_mutable.hpp> |
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#include <boost/numeric/bindings/is_real.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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#include <boost/utility/enable_if.hpp> |
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// |
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// The LAPACK-backend for lacon 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 lacon( const fortran_int_t n, float* v, float* x, |
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fortran_int_t* isgn, float& est, fortran_int_t& kase ) { |
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fortran_int_t info(0); |
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LAPACK_SLACON( &n, v, x, isgn, &est, &kase ); |
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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 lacon( const fortran_int_t n, double* v, double* x, |
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fortran_int_t* isgn, double& est, fortran_int_t& kase ) { |
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fortran_int_t info(0); |
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LAPACK_DLACON( &n, v, x, isgn, &est, &kase ); |
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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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inline std::ptrdiff_t lacon( const fortran_int_t n, std::complex<float>* v, |
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std::complex<float>* x, float& est, fortran_int_t& kase ) { |
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fortran_int_t info(0); |
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LAPACK_CLACON( &n, v, x, &est, &kase ); |
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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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inline std::ptrdiff_t lacon( const fortran_int_t n, std::complex<double>* v, |
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std::complex<double>* x, double& est, fortran_int_t& kase ) { |
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fortran_int_t info(0); |
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LAPACK_ZLACON( &n, v, x, &est, &kase ); |
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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 lacon. |
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// |
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template< typename Value, typename Enable = void > |
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struct lacon_impl {}; |
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// |
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// This implementation is enabled if Value is a real type. |
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// |
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template< typename Value > |
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struct lacon_impl< Value, typename boost::enable_if< is_real< Value > >::type > { |
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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 VectorX, typename V, typename ISGN > |
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static std::ptrdiff_t invoke( const fortran_int_t n, VectorX& x, |
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real_type& est, fortran_int_t& kase, detail::workspace2< V, |
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ISGN > work ) { |
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namespace bindings = ::boost::numeric::bindings; |
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BOOST_STATIC_ASSERT( (bindings::is_mutable< VectorX >::value) ); |
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BOOST_ASSERT( bindings::size(work.select(fortran_int_t())) >= |
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min_size_isgn( n )); |
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BOOST_ASSERT( bindings::size(work.select(real_type())) >= |
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min_size_v( n )); |
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BOOST_ASSERT( n >= 1 ); |
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return detail::lacon( n, |
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bindings::begin_value(work.select(real_type())), |
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bindings::begin_value(x), |
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bindings::begin_value(work.select(fortran_int_t())), est, |
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kase ); |
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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 VectorX > |
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static std::ptrdiff_t invoke( const fortran_int_t n, VectorX& x, |
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real_type& est, fortran_int_t& kase, minimal_workspace ) { |
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namespace bindings = ::boost::numeric::bindings; |
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bindings::detail::array< real_type > tmp_v( min_size_v( n ) ); |
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bindings::detail::array< |
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fortran_int_t > tmp_isgn( min_size_isgn( n ) ); |
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return invoke( n, x, est, kase, workspace( tmp_v, tmp_isgn ) ); |
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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 VectorX > |
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static std::ptrdiff_t invoke( const fortran_int_t n, VectorX& x, |
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real_type& est, fortran_int_t& kase, optimal_workspace ) { |
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namespace bindings = ::boost::numeric::bindings; |
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return invoke( n, x, est, kase, 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 v. |
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// |
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static std::ptrdiff_t min_size_v( const std::ptrdiff_t n ) { |
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return 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 isgn. |
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// |
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static std::ptrdiff_t min_size_isgn( const std::ptrdiff_t n ) { |
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return n; |
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} |
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}; |
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// |
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// This implementation is enabled if Value is a complex type. |
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// |
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template< typename Value > |
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struct lacon_impl< Value, typename boost::enable_if< is_complex< Value > >::type > { |
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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 VectorX, typename V > |
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static std::ptrdiff_t invoke( const fortran_int_t n, VectorX& x, |
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real_type& est, fortran_int_t& kase, detail::workspace1< |
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V > work ) { |
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namespace bindings = ::boost::numeric::bindings; |
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BOOST_STATIC_ASSERT( (bindings::is_mutable< VectorX >::value) ); |
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BOOST_ASSERT( bindings::size(work.select(value_type())) >= |
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min_size_v( n )); |
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BOOST_ASSERT( n >= 1 ); |
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return detail::lacon( n, |
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bindings::begin_value(work.select(value_type())), |
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bindings::begin_value(x), est, kase ); |
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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 VectorX > |
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static std::ptrdiff_t invoke( const fortran_int_t n, VectorX& x, |
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real_type& est, fortran_int_t& kase, minimal_workspace ) { |
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namespace bindings = ::boost::numeric::bindings; |
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bindings::detail::array< value_type > tmp_v( min_size_v( n ) ); |
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return invoke( n, x, est, kase, workspace( tmp_v ) ); |
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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 VectorX > |
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static std::ptrdiff_t invoke( const fortran_int_t n, VectorX& x, |
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real_type& est, fortran_int_t& kase, optimal_workspace ) { |
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namespace bindings = ::boost::numeric::bindings; |
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return invoke( n, x, est, kase, 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 v. |
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// |
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static std::ptrdiff_t min_size_v( const std::ptrdiff_t n ) { |
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return 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 lacon_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 lacon. Its overload differs for |
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// * User-defined workspace |
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// |
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template< typename VectorX, 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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lacon( const fortran_int_t n, VectorX& x, typename remove_imaginary< |
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typename bindings::value_type< VectorX >::type >::type& est, |
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fortran_int_t& kase, Workspace work ) { |
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return lacon_impl< typename bindings::value_type< |
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VectorX >::type >::invoke( n, x, est, kase, work ); |
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} |
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// |
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// Overloaded function for lacon. Its overload differs for |
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// * Default workspace-type (optimal) |
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// |
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template< typename VectorX > |
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inline typename boost::disable_if< detail::is_workspace< VectorX >, |
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std::ptrdiff_t >::type |
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lacon( const fortran_int_t n, VectorX& x, typename remove_imaginary< |
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typename bindings::value_type< VectorX >::type >::type& est, |
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fortran_int_t& kase ) { |
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return lacon_impl< typename bindings::value_type< |
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VectorX >::type >::invoke( n, x, est, kase, 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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