public static float InverseSqrtFast(float x)
{
BufferItem item = new BufferItem();
item.Single = x;
float xhalf = 0.5f * item.Single;
int i = item.Int32; // Read bits as integer.
item.Int32 = 0x5f375a86 - (i >> 1); // Make an initial guess for Newton-Raphson approximation
return item.Single * (1.5f - xhalf * item.Single * item.Single); // Perform left single Newton-Raphson step.
}
/// <summary>
/// Indicates whether this instance and a specified object are equal.
/// </summary>
public bool Equals(BufferItem other)
{
return this.Int32 == other.Int32;
}