scipy.linalg.lapack.dgecon

scipy.linalg.lapack.dgecon(a, anorm, norm='1') = <flapack function dgecon>

Estimate the reciprocal condition number of a factorized matrix (LAPACK dgecon).

Parameters:

andarray

LU factorization of a square matrix, as returned by getrf.

anormfloat

Norm of the original matrix, in the norm selected by norm.

normstr, optional

'1' or 'O' for the 1-norm, 'I' for the infinity norm. Default is '1'.

Returns:

rcondfloat

Estimate of the reciprocal condition number.

infoint

0 on success; if negative, the -info-th argument had an illegal value.