lower triangular matrix with unit diagonals

Pls how can I get a lower triangular matrix with unit diagonals when working with LU factorization

[John D'Errico]

Um, what is your question? The LU factorization gives you that. So write the code. Or call LU. What is the problem?

[Ifechukwu]

The problem is what formular can I use to get L with unit diagonals how do I write the code to solve for L to be able to apply it in my code