Documentation Center

  • Trial Software
  • Product Updates

Reciprocal Condition

Compute reciprocal condition of square matrix in 1-norm


Math Functions / Matrices and Linear Algebra / Matrix Operations



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:

Dialog Box


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

Supported Data Types

  • Double-precision floating point

  • Single-precision floating point

See Also

Matrix 1-NormDSP System Toolbox
NormalizationDSP System Toolbox

Was this topic helpful?