#include <float.h>

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Macros
#define	NUM_ZERO DBL_MIN/DBL_EPSILON
	Numerical helpers. More...

#define	EPS(value) (value)

#define	ZERO EPS(1e-12)

#define	DBL_EQ(i, j) (fabs((i)-(j))<NUM_ZERO)

#define	DBL_GE(i, j) ((i)>(j)-NUM_ZERO)

#define	DBL_LE(i, j) ((i)<(j)+NUM_ZERO)

#define	DBL_GT(i, j) ((i)>(j)+NUM_ZERO)

#define	DBL_LT(i, j) ((i)<(j)-NUM_ZERO)

#define	SQUARE(x) ((x) * (x))
	Usefull math macros. More...

#define	SGN(x) ( ((x)>ZERO)? (1) : ( ((x)<(-ZERO))? (-1) : (0) ) )

#define	SUBDET2(i, j, k, l) (a[(i)][(k)]a[(j)][(l)]-a[(i)][(l)]a[(j)][(k)])

#define	M_PI 3.14159265358979323846264338327950288f

Typedefs
typedef double	SmallVec1_t [1]
	small matrix types More...

typedef double	SmallVec2_t [2]

typedef double	SmallVec3_t [3]

typedef double	SmallVec4_t [4]

typedef SmallVec1_t *	SmallMtx1

typedef SmallVec2_t *	SmallMtx2

typedef SmallVec3_t *	SmallMtx3

typedef SmallVec4_t *	SmallMtx4

Functions
double	vector_length (double[])

double	scalar_product (double[], double[])

void	normalize_vector (double[])

void	scale_vector (double[], double)

void	vector_product (double[], double[], double[])

void	vector_difference (double[], double[], double[])

double	Det3 (SmallMtx3 a)

double	MatrixInverse (double a, double b, int size)

void	PrintSmallMatrix (double *mtx, int size)

Detailed Description

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Please make a following refer to Flow123d on your project site if you use the program for any purpose, especially for academic research: Flow123d, Research Centre: Advanced Remedial Technologies, Technical University of Liberec, Czech Republic

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 3 as published by the Free Software Foundation.

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., 59 Temple Place - Suite 330, Boston, MA 021110-1307, USA.

$Id$ $Revision$ $LastChangedBy$ $LastChangedDate$

Definition in file math_fce.h.

Macro Definition Documentation

#define DBL_EQ	(	i,
		j
	)	(fabs((i)-(j))<NUM_ZERO)

Definition at line 62 of file math_fce.h.

#define DBL_GE	(	i,
		j
	)	((i)>(j)-NUM_ZERO)

Definition at line 63 of file math_fce.h.

#define DBL_GT	(	i,
		j
	)	((i)>(j)+NUM_ZERO)

Definition at line 65 of file math_fce.h.

#define DBL_LE	(	i,
		j
	)	((i)<(j)+NUM_ZERO)

Definition at line 64 of file math_fce.h.

#define DBL_LT	(	i,
		j
	)	((i)<(j)-NUM_ZERO)

Definition at line 66 of file math_fce.h.

#define EPS ( value ) (value)

Definition at line 57 of file math_fce.h.

#define M_PI 3.14159265358979323846264338327950288f

Definition at line 73 of file math_fce.h.

#define NUM_ZERO DBL_MIN/DBL_EPSILON

Numerical helpers.

Definition at line 53 of file math_fce.h.

#define SGN ( x ) ( ((x)>ZERO)? (1) : ( ((x)<(-ZERO))? (-1) : (0) ) )

Definition at line 70 of file math_fce.h.

#define SQUARE ( x ) ((x) * (x))

Usefull math macros.

Definition at line 69 of file math_fce.h.

#define SUBDET2	(	i,
		j,
		k,
		l
	)	(a[(i)][(k)]a[(j)][(l)]-a[(i)][(l)]a[(j)][(k)])

Definition at line 71 of file math_fce.h.

#define ZERO EPS(1e-12)

Definition at line 60 of file math_fce.h.

Typedef Documentation

typedef SmallVec1_t* SmallMtx1

Definition at line 41 of file math_fce.h.

typedef SmallVec2_t* SmallMtx2

Definition at line 42 of file math_fce.h.

typedef SmallVec3_t* SmallMtx3

Definition at line 43 of file math_fce.h.

typedef SmallVec4_t* SmallMtx4

Definition at line 44 of file math_fce.h.

typedef double SmallVec1_t[1]

small matrix types

Definition at line 36 of file math_fce.h.

typedef double SmallVec2_t[2]

Definition at line 37 of file math_fce.h.

typedef double SmallVec3_t[3]

Definition at line 38 of file math_fce.h.

typedef double SmallVec4_t[4]

Definition at line 39 of file math_fce.h.

Function Documentation

double Det3 ( SmallMtx3 a )

Definition at line 106 of file math_fce.cc.

double MatrixInverse	(	double *	a,
		double *	b,
		int	size
	)

Definition at line 116 of file math_fce.cc.

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void normalize_vector ( double [] )

Definition at line 60 of file math_fce.cc.

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void PrintSmallMatrix	(	double *	mtx,
		int	size
	)

Definition at line 226 of file math_fce.cc.

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double scalar_product	(	double	[],
		double	[]
	)

Definition at line 53 of file math_fce.cc.

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void scale_vector	(	double	[],
		double
	)

Definition at line 72 of file math_fce.cc.

void vector_difference	(	double	[],
		double	[],
		double	[]
	)

Definition at line 92 of file math_fce.cc.

double vector_length ( double [] )

Definition at line 46 of file math_fce.cc.

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void vector_product	(	double	[],
		double	[],
		double	[]
	)

Definition at line 80 of file math_fce.cc.

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Macros

Typedefs

Functions

Detailed Description

Macro Definition Documentation

Typedef Documentation

Function Documentation