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/*
math/functions.cc
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#include "math/functions.h"
#include <stdlib.h>
namespace math
{
const float DELTA = 10e-10;
float randomf(const float max)
{
return ((float) rand() / (float) RAND_MAX) * max;
}
unsigned randomi(const unsigned int max)
{
return ((unsigned int)(rand() % max));
}
float degrees180f(float angle)
{
float r = angle;
while (r - DELTA < -180.0f)
r += 360.0f;
while (r + DELTA > 180.0f)
r -= 360.0f;
return r;
}
float degrees360f(float angle)
{
float r = angle;
while (r - DELTA < 0)
r += 360.0f;
while (r + DELTA > 360.0f)
r -= 360.0f;
return r;
}
float sgnf(float value)
{
if (value < 0)
return -1;
else if (value > 0)
return 1;
return 0;
}
} // namespace math
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