/// <summary>
 /// Returns the component-wise compare of x == y.
 /// </summary>
 /// <param name="x"></param>
 /// <param name="y"></param>
 /// <returns></returns>
 protected bvec equal(ivec x, ivec y) { throw new NotImplementedException(); }
 /// <summary>
 /// Returns the component-wise compare of x >= y.
 /// </summary>
 /// <param name="x"></param>
 /// <param name="y"></param>
 /// <returns></returns>
 protected bvec greaterThanEqual(ivec x, ivec y) { throw new NotImplementedException(); }
 /// <summary>
 /// Returns the component-wise compare of x < y.
 /// </summary>
 /// <param name="x"></param>
 /// <param name="y"></param>
 /// <returns></returns>
 protected bvec lessThan(ivec x, ivec y) { throw new NotImplementedException(); }
 /// <summary>
 /// Returns the component-wise compare of x >= y.
 /// </summary>
 /// <param name="x"></param>
 /// <param name="y"></param>
 /// <returns></returns>
 protected bvec greaterThanEqual(ivec x, ivec y)
 {
     throw new NotImplementedException();
 }
 /// <summary>
 /// Returns the component-wise compare of x < y.
 /// </summary>
 /// <param name="x"></param>
 /// <param name="y"></param>
 /// <returns></returns>
 protected bvec lessThan(ivec x, ivec y)
 {
     throw new NotImplementedException();
 }
 /// <summary>
 /// Returns the component-wise compare of x != y.
 /// </summary>
 /// <param name="x"></param>
 /// <param name="y"></param>
 /// <returns></returns>
 protected bvec notEqual(ivec x, ivec y)
 {
     throw new NotImplementedException();
 }