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/*
math/functions.h
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#ifndef __INCLUDED_MATH_FUNCTIONS_H__
#define __INCLUDED_MATH_FUNCTIONS_H__
#include <math.h>
#include <cstdlib>
#include <cmath>
namespace math
{
/// return the smallest of two float values
float min(float a, float b);
/// return the smallest of two integers
int min(int a, int b);
/// return the largest of two float values
float max(float a, float b);
/// return the largest of two integers
int max(int a, int b);
/// returns a random float
/** The value returned will be in the interval [0-max]
* @param max the maximum value returned
**/
float randomf(const float max = 1);
/// returns a random integer
/** The value returned will be in the interval [0-(max-1)]
* @param max the maximum value returned
**/
unsigned int randomi(const unsigned int max);
/// return the sign of a float value
float sgnf(float value);
/// return an angle in the ]-180,180] range
float degrees180f(float angle);
/// return an angle in the [0,360[ range
float degrees360f(float angle);
/// clamp a float to a specified range
inline void clamp(float &value, const float min=0.0f, const float max=1.0f)
{
if (value < min)
value = min;
else if (value > max)
value = max;
}
/// return the absolute value of a float
inline float absf(float f)
{
if (f < 0)
return -f;
else
return f;
}
} // namespace math
#endif // __INCLUDED_MATH_FUNCTIONS_H__
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