c = rcond(X)
rcond(X)
is an estimate for the reciprocal of the condition of X
in 1-norm using the LINPACK condition estimator. If X
is well conditioned, rcond(X)
is near 1.0. If X
is badly conditioned, rcond(X)
is near 0.0. Compared to cond
, rcond
is a more efficient, but less reliable, method of estimating the condition of a matrix.
rcond
uses the condition estimator from the LINPACK routine ZGECO
.
cond
,condest
,norm
,normest
,rank
,svd
(c) Copyright 1994 by The MathWorks, Inc.