Meschach is a library of routines written in c for matrix computations. these include operations for basic numerical linear algebra; routines for matrix factorisations; solving systems of equations; solving least squares problems; computing eigenvalues, eigenvectors and singular values;sparse matrix computations including both direct and iterative methods. this package makes use of the features of the c programming language: data structures, dynamic memory allocation and deallocation, pointers, functions as parameters and objects. meschach has a number of self-contained data structures for matrices, vectors and other mathematical objects. web site: ftp://ftpmaths.anu.edu.au/pub/meschach/meschach.html