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#ifndef SINUSTABLE_H
#define SINUSTABLE_H
#include <cassert>
//----------------------------------------------------------------------------
class SinusTable
{
public:
SinusTable();
~SinusTable();
static inline double sin(int angle)
{
return sm_sinTable[normalize(angle)];
}
static inline double cos(int angle)
{
return sm_cosTable[normalize(angle)];
}
static inline int normalize(int angle)
{
while (angle < 0) angle += 360;
while (angle >= 360) angle -= 360;
assert(angle >= 0 && angle < 360);
return angle;
}
private:
static SinusTable sm_instance;
static double sm_sinTable[360];
static double sm_cosTable[360];
};
#endif //SINUSTABLE_H
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