#include <sta/math/utils.hpp>
#include <cstdint>

namespace sta
{
	namespace math
	{
		float fast_inv_sqrt(float v) {

			long i;
			float x2, y;
			const float threehalfs = 1.5f;

			y = v;
			x2 = y * 0.5f;
			i = * (long*)&y;
			i = 0x5f3759df - (i >> 1);
			y = *(float *) &i;
			y = y * (threehalfs - (x2 * y * y));
			//y = y * (threehalfs - (x2 * y * y));

			return y;
		}

		float clip(float value, float min, float max)
		{
			if (value < min)
			{
				return  min;
			}

			if (value > max)
			{
				return max;
			}

			return value;
		}

	} // namespace math

} // namespace sta