| 1 | /******************************************************************************
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| 2 | * gmath.h
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| 3 | * Top level header file for gmath units
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| 4 |
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| 5 | * @Copyright David D.Gray <ddgray@armadce.demon.co.uk>
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| 6 | * 27th. Sep. 2000
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| 7 | * Last updated: $Id: gmath.h 71201 2017-06-21 14:07:39Z neteler $
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| 8 | *
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| 9 |
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| 10 | * This file is part of GRASS GIS. It is free software. You can
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| 11 | * redistribute it and/or modify it under the terms of
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| 12 | * the GNU General Public License as published by the Free Software
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| 13 | * Foundation; either version 2 of the License, or (at your option)
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| 14 | * any later version.
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| 15 |
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| 16 | * This program is distributed in the hope that it will be useful,
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| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | * GNU General Public License for more details.
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| 20 |
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| 21 | ******************************************************************************/
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| 22 |
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| 23 | #ifndef GRASS_GMATH_H
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| 24 | #define GRASS_GMATH_H
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| 25 |
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| 26 | #include <grass/config.h>
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| 27 |
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| 28 | #ifdef CTYPESGEN
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| 29 | #undef __attribute__
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| 30 | #define __attribute__(x)
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| 31 | #endif
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| 32 |
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| 33 | #include <stddef.h>
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| 34 |
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| 35 | /*solver names */
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| 36 | #define G_MATH_SOLVER_DIRECT_GAUSS "gauss"
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| 37 | #define G_MATH_SOLVER_DIRECT_LU "lu"
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| 38 | #define G_MATH_SOLVER_DIRECT_CHOLESKY "cholesky"
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| 39 | #define G_MATH_SOLVER_ITERATIVE_JACOBI "jacobi"
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| 40 | #define G_MATH_SOLVER_ITERATIVE_SOR "sor"
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| 41 | #define G_MATH_SOLVER_ITERATIVE_CG "cg"
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| 42 | #define G_MATH_SOLVER_ITERATIVE_PCG "pcg"
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| 43 | #define G_MATH_SOLVER_ITERATIVE_BICGSTAB "bicgstab"
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| 44 |
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| 45 | /*preconditioner */
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| 46 | #define G_MATH_DIAGONAL_PRECONDITION 1
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| 47 | #define G_MATH_ROWSCALE_ABSSUMNORM_PRECONDITION 2
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| 48 | #define G_MATH_ROWSCALE_EUKLIDNORM_PRECONDITION 3
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| 49 | #define G_MATH_ROWSCALE_MAXNORM_PRECONDITION 4
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| 50 |
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| 51 | /*!
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| 52 | * \brief The row vector of the sparse matrix
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| 53 | * */
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| 54 | typedef struct
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| 55 | {
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| 56 | double *values; /*The non null values of the row */
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| 57 | unsigned int cols; /*Number of entries */
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| 58 | unsigned int *index; /*the index number */
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| 59 | } G_math_spvector;
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| 60 |
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| 61 | #include <grass/defs/gmath.h>
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| 62 |
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| 63 | #endif /* GRASS_GMATH_H */
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