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mmath.h File Reference

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#include <magic/mobject.h>
#include <magic/mpackarray.h>
#include <math.h>

Go to the source code of this file.

Defines
#define	ROUND_DOUBLE_THRESHOLD   1e-15
Typedefs
typedef PackArray< double >	Vector
Functions
	BEGIN_NAMESPACE (MagiC)
int	rnd (int range)
double	frnd ()
double	gaussrnd (double stdv)
double	sqr (double x)
double	sigmoid (double x)
void	swap (double &x, double &y)
bool	is_undef (double x)
double	sum (const Vector &x)
double	min (const Vector &x)
int	minIndex (const Vector &x)
double	max (const Vector &x)
int	maxIndex (const Vector &x)
double	avg (const Vector &x)
double	stddev (const Vector &x)
double	stdmerr (const Vector &x)
Vector	histogram (const Vector &x, int n)
void	add (Vector &x, double m)
void	multiply (Vector &x, double m)
void	multiplyToUnity (Vector &x)

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Detailed Description

Definition in file mmath.h.

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Define Documentation

#define ROUND_DOUBLE_THRESHOLD   1e-15

Threshold for rounding values in certain functions. Definition at line 124 of file mmath.h.

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Typedef Documentation

typedef PackArray<double> Vector

Vector is just an alias for the PackArray<double>, not even a subclass. Definition at line 85 of file mmath.h.

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Function Documentation

void add (  Vector &    x, double    m )

Adds a value to the Vector . Definition at line 112 of file mmath.cc. References PackArray::size(). Referenced by multiplyToUnity().

double avg (  const Vector &    x )

Average of the values in Vector x. Definition at line 58 of file mmath.cc. References PackArray::size(), and sum(). Referenced by stddev().

BEGIN_NAMESPACE (  MagiC    )

This file is part of the MagiC++ library. * * Copyright (C) 1998-2002 Marko Grönroos <magi@iki.fi> * * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; see the file COPYING.LIB. If * not, write to the Free Software Foundation, Inc., 59 Temple Place * Suite 330, Boston, MA 02111-1307, USA. * *

double frnd (    )

Returns a double-float random value between 0 and 1. Definition at line 408 of file mobject.cc.

double gaussrnd (  double    stdv )

Returns a normally distributed random value with the given standard deviation. Definition at line 412 of file mobject.cc.

Vector histogram (  const Vector &    x, int    n )

Creates a histogram with n slots of the values in the Vector. Definition at line 74 of file mmath.cc. References PackArray::make(), max(), min(), and PackArray::size().

bool is_undef (  double    x )  [inline]

Retuns if the given value has an "undefined" value. Definition at line 78 of file mmath.h. Referenced by max(), maxIndex(), min(), and minIndex().

double max (  const Vector &    x )

Largest value in Vector x. Definition at line 39 of file mmath.cc. References is_undef(), max(), and PackArray::size(). Referenced by histogram(), max(), and maxIndex().

int maxIndex (  const Vector &    x )

The index of the largest value in Vector x. Definition at line 47 of file mmath.cc. References is_undef(), max(), and PackArray::size().

double min (  const Vector &    x )

Lowest value in Vector x. Definition at line 20 of file mmath.cc. References is_undef(), min(), and PackArray::size(). Referenced by histogram(), min(), and minIndex().

int minIndex (  const Vector &    x )

The index of the lowest value in Vector x. Definition at line 28 of file mmath.cc. References is_undef(), min(), and PackArray::size().

void multiply (  Vector &    x, double    m )

Multiplies the values in the Vector with a coefficient. Definition at line 117 of file mmath.cc. References PackArray::size(). Referenced by multiplyToUnity().

void multiplyToUnity (  Vector &    x )

Multiplies the values in the Vector so that they sum to 1.0. Definition at line 122 of file mmath.cc. References add(), multiply(), PackArray::size(), and sum().

int rnd (  int    range )

Returns a random integer value in range 0..range-1. Definition at line 404 of file mobject.cc.

double sigmoid (  double    x )  [inline]

Standard sigmoid (logistic) function. Definition at line 63 of file mmath.h.

double sqr (  double    x )  [inline]

Square x^2. Definition at line 52 of file mmath.h. References sqr(). Referenced by sqr().

double stddev (  const Vector &    x )

Standard deviation of the values in Vector x. Definition at line 62 of file mmath.cc. References avg(), and PackArray::size(). Referenced by stdmerr().

double stdmerr (  const Vector &    x )

Standard error of the values in Vector x. Definition at line 70 of file mmath.cc. References PackArray::size(), and stddev().

double sum (  const Vector &    x )

Sum of values in Vector x. Definition at line 13 of file mmath.cc. References PackArray::size(). Referenced by avg(), Matrix::multiplyToSum(), and multiplyToUnity().

void swap (  double &    x, double &    y )  [inline]

Simple swap operation on doubles. Definition at line 72 of file mmath.h.

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