Compute reciprocal condition of square matrix in 1-norm
The Reciprocal Condition block computes the reciprocal of the condition number for a square input matrix A.
y = rcond(A) % Equivalent MATLAB code
where κ is the condition number (κ ≥ 1), and y is the scalar output (0 ≤ y < 1).
The matrix 1-norm, , is the maximum column-sum in the M-by-M matrix A.
For a 3-by-3 matrix:
Golub, G. H., and C. F. Van Loan. Matrix Computations. 3rd ed. Baltimore, MD: Johns Hopkins University Press, 1996.