2024-06-16 05:31:13 -04:00
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/* lmath.h
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This file is part of a program that implements a Software-Defined Radio.
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Copyright (C) 2015, 2023 Warren Pratt, NR0V
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Copyright (C) 2024 Edouard Griffiths, F4EXB Adapted to SDRangel
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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The author can be reached by email at
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warren@wpratt.com
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*/
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#ifndef wdsp_bldr_h
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#define wdsp_bldr_h
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#include <vector>
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#include "export.h"
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namespace WDSP {
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class WDSP_API BLDR
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{
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public:
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double* catxy;
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std::vector<double> sx;
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std::vector<double> sy;
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std::vector<double> h;
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std::vector<int> p;
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std::vector<int> np;
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std::vector<double> taa;
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std::vector<double> tab;
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std::vector<double> tag;
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std::vector<double> tad;
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std::vector<double> tbb;
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std::vector<double> tbg;
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std::vector<double> tbd;
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std::vector<double> tgg;
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std::vector<double> tgd;
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std::vector<double> tdd;
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std::vector<double> A;
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std::vector<double> B;
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std::vector<double> C;
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std::vector<double> D;
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std::vector<double> E;
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std::vector<double> F;
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std::vector<double> G;
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std::vector<double> MAT;
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std::vector<double> RHS;
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std::vector<double> SLN;
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std::vector<double> z;
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std::vector<double> zp;
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std::vector<double> wrk;
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std::vector<int> ipiv;
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BLDR(int points, int ints);
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BLDR(const BLDR&) = delete;
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BLDR& operator=(const BLDR& other) = delete;
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~BLDR();
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void flush(int points);
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void execute(int points, const double* x, const double* y, int ints, const double* t, int* info, double* c, double ptol);
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private:
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static int fcompare(const void* a, const void* b);
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static void decomp(int n, std::vector<double>& a, std::vector<int>& piv, int* info, std::vector<double>& wrk);
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static void dsolve(int n, std::vector<double>& a, std::vector<int>& piv, std::vector<double>& b, std::vector<double>& x);
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static void cull(int* n, int ints, std::vector<double>& x, const double* t, double ptol);
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};
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} // namespace WDSP
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#endif
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