public static Int128 operator &(Int128 a, Int128 b)
{
Int128 c;
UInt128.And(out c.v, ref a.v, ref b.v);
return(c);
}
public bool CanPlace(PieceBitmap bitmap, int x, int y)
{
#if SAFE_MODE || DEBUG
if (x < 0)
{
throw new Exception("X is outside of range");
}
if (y < 0)
{
throw new Exception("Y is outside of range");
}
if (x + bitmap.Width > Width)
{
throw new Exception("X is outside of range");
}
if (y + bitmap.Height > Height)
{
throw new Exception("Y is outside of range");
}
#endif
//var shifted = bitmap.Bitmap << (x + y * Width);
var shifted = bitmap.GetShifted(x, y);
//return (shifted & _state).IsZero;
UInt128.And(out shifted, ref shifted, ref _state);
return(shifted.IsZero);
}