1This port installs the module SPEX, previously known as SLIP_LU, of SuiteSparse. 2 3SPEX is a software package used to solve a sparse systems of linear equations 4exactly using the Sparse Left-looking Integer-Preserving LU factorization. 5 6SPEX Purpose: Exactly solve a sparse system of linear equations using a given 7input matrix and right hand side vector file. This code can output the final 8solution to a user specified output file in either double precision or full 9precision rational numbers. 10