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- /* linalg/tridiag.h
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002 Gerard Jungman,
- * Brian Gough, David Necas
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- /* Author: G. Jungman
- */
- /* Low level tridiagonal solvers.
- * Used internally in other areas of GSL.
- */
- #ifndef __GSL_TRIDIAG_H__
- #define __GSL_TRIDIAG_H__
- #include <stdlib.h>
- static
- int solve_tridiag_nonsym(
- const double diag[], size_t d_stride,
- const double abovediag[], size_t a_stride,
- const double belowdiag[], size_t b_stride,
- const double rhs[], size_t r_stride,
- double x[], size_t x_stride,
- size_t N
- );
- static
- int solve_tridiag(
- const double diag[], size_t d_stride,
- const double offdiag[], size_t o_stride,
- const double b[], size_t b_stride,
- double x[], size_t x_stride,
- size_t N);
- static
- int solve_cyc_tridiag(
- const double diag[], size_t d_stride,
- const double offdiag[], size_t o_stride,
- const double b[], size_t b_stride,
- double x[], size_t x_stride,
- size_t N
- );
- static
- int solve_cyc_tridiag_nonsym(
- const double diag[], size_t d_stride,
- const double abovediag[], size_t a_stride,
- const double belowdiag[], size_t b_stride,
- const double rhs[], size_t r_stride,
- double x[], size_t x_stride,
- size_t N);
- #endif /* __GSL_TRIDIAG_H__ */
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