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/*
* rtmath.h
*
* Copyright (c) 2000-2004 by Florian Fischer (florianfischer@gmx.de)
* and Martin Trautmann (martintrautmann@gmx.de)
*
* This file may be distributed and/or modified under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
*/
/** \file
* Contains the class Math, which provides static helper functions
* and mathematical constants.
* @see Math
*/
#ifndef __LRT_MATH__
#define __LRT_MATH__
namespace lrt {
/** Class Math provides some static helper functions to compute often-used mathematical functions
* in a system-independent manner.
* Currently under construction.
*/
class Math
{
public:
/** The largest positive value which is representable as a 32-bit integer. */
static const int MAX_INT;
/** The largest negative value which is representable as a 32-bit integer. */
static const int MIN_INT;
/** The most possibly exact representation of the number Pi. */
static const double PI;
/** The most possibly exact representation of the number <b>e</b> (the
* base of the natural logarithm). */
static const double E;
/** Returns the bigger one of the given integers.
* Note: This function is inline and will be translated into the usual code.
* So please use it to enhance code readability. */
static inline int max(int num1, int num2);
/** Returns the smaller one of the given integers.
* Note: This function is inline and will be translated into the usual code.
* So please use it to enhance code readability. */
static inline int min(int num1, int num2);
/** Returns the absolute value of the given integer.
* Note: This function is inline and will be translated into the usual code.
* So please use it to enhance code readability. */
static inline int abs(int num);
/** Creates a pseudorandom number between (and including) the values <tt>from</tt>
* and <tt>to</tt>.<br>
* If you do not use seed() or randomize() before using rand(), it will
* initialize itself to return randomized numbers.
*/
static int rand(int from, int to);
/** Creates reproducable pseudorandom numbers by seeding the random number
* generator with a fix number.
*/
static void seed(unsigned long seed);
/** Creates unreproducable, but "really random" numbers by seeding the random
* number generator with a number from a random source (usually the system timer).
*/
static void randomize();
/// Computes the square root of num.
static double sqrt(double num);
static double log10(double num);
static double ln(double num);
static double exp(double num);
static double sin(double num);
static double cos(double num);
static double tan(double num);
private:
static bool randomInit;
Math();
~Math();
};
} // namespace
#include "rtmath.inline.cpp"
#endif
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