Istituto di Scienza e Tecnologie dell'Informazione     
Arioli M., Duff I. Subroutine libray specification. Gia' apparsa come Harwell Laboratory, MC41, May 1988. Internal note IEI-B4-35, 1988.
This subroutine estimates the 1-norm or the ∞-norm of a nxn matrix A given the ability to multiply a vestor by both the matrix and its transpose. This subroutine is useful for estimating different kinds of condition number of a matrix.

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