Reciprocal Condition (DSP Blockset)

Compute the reciprocal condition of a square matrix in the 1-norm.

Library

Linear Algebra, in Math Functions

Description

The Reciprocal Condition block computes the reciprocal of the condition number for a square input matrix A:

y = rcond(A)         % equivalent MATLAB code

where

is the condition number (

1), and y is the output (0

y<1).

The matrix 1-norm,

, is the maximum column-sum in the M-by-M matrix A.

or, for a 3-by-3 matrix:

Dialog Box

References

Golub, G. H., and C. F. Van Loan. Matrix Computations. 3rd ed. Baltimore, MD: Johns Hopkins University Press, 1996.