1
function c = cond1est (A)
2
%COND1EST 1-norm condition estimate.
7
% Copyright 2006-2007, Timothy A. Davis.
8
% http://www.cise.ufl.edu/research/sparse
11
if (m ~= n | ~isreal (A)) %#ok
12
error ('A must be square and real') ;
19
if (~isempty (find (abs (diag (U)) == 0))) %#ok
22
c = norm (A,1) * norm1est (L,U,P,Q) ;