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C++ API

: c = rcond (A)

Compute the 1-norm estimate of the reciprocal condition number as returned by LAPACK.

If the matrix is well-conditioned then c will be near 1 and if the matrix is poorly conditioned it will be close to 0.

The matrix A must not be sparse. If the matrix is sparse then condest (A) or rcond (full (A)) should be used instead.

See also: cond, condest.

Package: octave