GRASS GIS 8 Programmer's Manual
8.5.0dev(2024)-0b29c8ef57
gmath.h
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/******************************************************************************
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* gmath.h
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* Top level header file for gmath units
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* @Copyright David D.Gray <ddgray@armadce.demon.co.uk>
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* 27th. Sep. 2000
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* Last updated: $Id$
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*
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* This file is part of GRASS GIS. It is free software. You can
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* redistribute it and/or modify it under the terms of
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* the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* 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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******************************************************************************/
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#ifndef GRASS_GMATH_H
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#define GRASS_GMATH_H
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#include <
grass/config.h
>
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#ifdef CTYPESGEN
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#undef __attribute__
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#define __attribute__(x)
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#endif
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#include <stddef.h>
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/*solver names */
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#define G_MATH_SOLVER_DIRECT_GAUSS "gauss"
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#define G_MATH_SOLVER_DIRECT_LU "lu"
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#define G_MATH_SOLVER_DIRECT_CHOLESKY "cholesky"
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#define G_MATH_SOLVER_ITERATIVE_JACOBI "jacobi"
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#define G_MATH_SOLVER_ITERATIVE_SOR "sor"
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#define G_MATH_SOLVER_ITERATIVE_CG "cg"
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#define G_MATH_SOLVER_ITERATIVE_PCG "pcg"
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#define G_MATH_SOLVER_ITERATIVE_BICGSTAB "bicgstab"
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/*preconditioner */
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#define G_MATH_DIAGONAL_PRECONDITION 1
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#define G_MATH_ROWSCALE_ABSSUMNORM_PRECONDITION 2
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#define G_MATH_ROWSCALE_EUKLIDNORM_PRECONDITION 3
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#define G_MATH_ROWSCALE_MAXNORM_PRECONDITION 4
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/*!
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* \brief The row vector of the sparse matrix
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* */
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typedef
struct
{
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double
*
values
;
/*The non null values of the row */
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unsigned
int
cols
;
/*Number of entries */
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unsigned
int
*
index
;
/*the index number */
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}
G_math_spvector
;
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#include <
grass/defs/gmath.h
>
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#endif
/* GRASS_GMATH_H */
config.h
gmath.h
G_math_spvector
The row vector of the sparse matrix.
Definition:
gmath.h:54
G_math_spvector::values
double * values
Definition:
gmath.h:55
G_math_spvector::cols
unsigned int cols
Definition:
gmath.h:56
G_math_spvector::index
unsigned int * index
Definition:
gmath.h:57
include
grass
gmath.h
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