/// <summary>
/// Normalizes this vector with length <c>1</c>.
/// </summary>
/// <remarks>
/// This vector is <b>modified</b>.
/// </remarks>
///
/// <returns>this vector</returns>
///
public static IModifiableVector3d normalize(this IModifiableVector3d vector)
{
return(vector.divide(vector.magnitude()));
}
