78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT 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 FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2010,2011 Fredrik Johansson
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Copyright (C) 2013 Mike Hansen
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******************************************************************************/
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#ifdef T
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#include "templates.h"
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void
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TEMPLATE(T, mat_solve_tril_recursive) (TEMPLATE(T, mat_t) X,
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const TEMPLATE(T, mat_t) L,
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const TEMPLATE(T, mat_t) B,
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int unit, const TEMPLATE(T, ctx_t) ctx)
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{
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TEMPLATE(T, mat_t) LA, LC, LD, XX, XY, BX, BY;
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slong r, n, m;
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n = L->r;
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m = B->c;
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r = n / 2;
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if (n == 0 || m == 0)
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return;
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/*
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Denoting inv(M) by M^, we have:
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[A 0]^ [X] == [A^ 0 ] [X] == [A^ X]
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[C D] [Y] == [-D^ C A^ D^] [Y] == [D^ (Y - C A^ X)]
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*/
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TEMPLATE(T, mat_window_init) (LA, L, 0, 0, r, r, ctx);
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TEMPLATE(T, mat_window_init) (LC, L, r, 0, n, r, ctx);
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TEMPLATE(T, mat_window_init) (LD, L, r, r, n, n, ctx);
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TEMPLATE(T, mat_window_init) (BX, B, 0, 0, r, m, ctx);
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TEMPLATE(T, mat_window_init) (BY, B, r, 0, n, m, ctx);
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TEMPLATE(T, mat_window_init) (XX, X, 0, 0, r, m, ctx);
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TEMPLATE(T, mat_window_init) (XY, X, r, 0, n, m, ctx);
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TEMPLATE(T, mat_solve_tril) (XX, LA, BX, unit, ctx);
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TEMPLATE(T, mat_submul) (XY, BY, LC, XX, ctx);
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TEMPLATE(T, mat_solve_tril) (XY, LD, XY, unit, ctx);
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TEMPLATE(T, mat_window_clear) (LA, ctx);
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TEMPLATE(T, mat_window_clear) (LC, ctx);
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TEMPLATE(T, mat_window_clear) (LD, ctx);
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TEMPLATE(T, mat_window_clear) (BX, ctx);
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TEMPLATE(T, mat_window_clear) (BY, ctx);
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TEMPLATE(T, mat_window_clear) (XX, ctx);
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TEMPLATE(T, mat_window_clear) (XY, ctx);
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}
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#endif
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