86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
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// Copyright (C) 2013-2015 National ICT Australia (NICTA)
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// -------------------------------------------------------------------
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//
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// Written by Conrad Sanderson - http://conradsanderson.id.au
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// Written by Ryan Curtin
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//! \addtogroup sp_auxlib
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//! @{
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//! wrapper for accesing external functions for sparse matrices defined in ARPACK
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class sp_auxlib
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{
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public:
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enum form_type
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{
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form_none, form_lm, form_sm, form_lr, form_la, form_sr, form_li, form_si, form_sa
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};
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inline static form_type interpret_form_str(const char* form_str);
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//
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// eigs_sym() via ARPACK
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template<typename eT, typename T1>
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inline static bool eigs_sym(Col<eT>& eigval, Mat<eT>& eigvec, const SpBase<eT, T1>& X, const uword n_eigvals, const char* form_str, const eT default_tol);
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//
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// eigs_gen() via ARPACK
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template<typename T, typename T1>
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inline static bool eigs_gen(Col< std::complex<T> >& eigval, Mat< std::complex<T> >& eigvec, const SpBase<T, T1>& X, const uword n_eigvals, const char* form_str, const T default_tol);
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template<typename T, typename T1>
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inline static bool eigs_gen(Col< std::complex<T> >& eigval, Mat< std::complex<T> >& eigvec, const SpBase< std::complex<T>, T1>& X, const uword n_eigvals, const char* form_str, const T default_tol);
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//
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// spsolve() via SuperLU
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template<typename T1, typename T2>
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inline static bool spsolve_simple(Mat<typename T1::elem_type>& out, const SpBase<typename T1::elem_type, T1>& A, const Base<typename T1::elem_type, T2>& B, const superlu_opts& user_opts);
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template<typename T1, typename T2>
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inline static bool spsolve_refine(Mat<typename T1::elem_type>& out, typename T1::pod_type& out_rcond, const SpBase<typename T1::elem_type, T1>& A, const Base<typename T1::elem_type, T2>& B, const superlu_opts& user_opts);
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#if defined(ARMA_USE_SUPERLU)
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inline static void set_superlu_opts(superlu::superlu_options_t& options, const superlu_opts& user_opts);
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template<typename eT>
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inline static bool copy_to_supermatrix(superlu::SuperMatrix& out, const SpMat<eT>& A);
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template<typename eT>
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inline static bool wrap_to_supermatrix(superlu::SuperMatrix& out, const Mat<eT>& A);
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inline static void destroy_supermatrix(superlu::SuperMatrix& out);
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#endif
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private:
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// calls arpack saupd()/naupd() because the code is so similar for each
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// all of the extra variables are later used by seupd()/neupd(), but those
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// functions are very different and we can't combine their code
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template<typename eT, typename T, typename T1>
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inline static void run_aupd
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(
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const uword n_eigvals, char* which, const SpProxy<T1>& p, const bool sym,
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blas_int& n, eT& tol,
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podarray<T>& resid, blas_int& ncv, podarray<T>& v, blas_int& ldv,
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podarray<blas_int>& iparam, podarray<blas_int>& ipntr,
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podarray<T>& workd, podarray<T>& workl, blas_int& lworkl, podarray<eT>& rwork,
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blas_int& info
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);
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};
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