Add LU decomposition with complete pivoting?

[ajinkya-k]

Hello!

Is there a specific reason why an LU decomposition with full pivoting is not implemented? LAPACK provides this through the getc2 routine see here. Is it worth adding this to LinearAlgebra

[stevengj]

See also scipy/scipy#11903 … this is mainly useful for pedagogy AFAIK, not for practical usage.