math module

1 files changed, 52 insertions, 0 deletions

diff --git a/src/math/functions.h b/src/math/functions.h
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--- /dev/null
+++ b/src/math/functions.h
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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__
+
+// C++ headers
+#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);
+
+} // namespace math
+
+#endif // __INCLUDED_MATH_FUNCTIONS_H__
+