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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 "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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float* catxy;
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float* sx;
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float* sy;
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float* h;
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int* p;
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int* np;
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float* taa;
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float* tab;
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float* tag;
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float* tad;
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float* tbb;
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float* tbg;
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float* tbd;
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float* tgg;
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float* tgd;
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float* tdd;
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float* A;
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float* B;
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float* C;
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float* D;
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float* E;
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float* F;
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float* G;
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float* MAT;
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float* RHS;
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float* SLN;
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float* z;
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float* zp;
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float* wrk;
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int* ipiv;
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static BLDR* create_builder(int points, int ints);
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static void destroy_builder(BLDR *a);
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static void flush_builder(BLDR *a, int points, int ints);
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static void xbuilder(BLDR *a, int points, float* x, float* y, int ints, float* t, int* info, float* c, float 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, float* a, int* piv, int* info, float* wrk);
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static void dsolve(int n, float* a, int* piv, float* b, float* x);
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static void cull(int* n, int ints, float* x, float* t, float ptol);
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};
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} // namespace WDSP
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#endif
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