return const_map

def make_not_differential_constellation(m, gray_coded):

    if (not isinstance(m, int) or m < 4 or not is_power_of_four(m)):

        raise ValueError("m must be a power of 4 integer.")

    # Each symbol holds k bits.

        # Number rows and columns using gray codes.

        gcs = gray_code(side)

        # Get inverse gray codes.

    else:

    # The distance between points is found.

    gc_to_x = [-1 + i_gcs[gc]*step for gc in range(0, side)]

    # First k/2 bits determine x position.

    # Following k/2 bits determine y position.

    const_map = []

    for i in range(m):

        const_map.append(complex(x,y))

    return const_map

# /////////////////////////////////////////////////////////////////////////////

    # No pre-diff code

    # Should add one so that we can gray-code the quadrant bits too.

    pre_diff_code = []

    return constellation

# /////////////////////////////////////////////////////////////////////////////