GECON

Estimates the reciprocal of the condition number.

Collaboration diagram for GECON:

Estimates the reciprocal of the condition number.

GECON estimates the reciprocal of the condition number of a general real matrix A, in either the 1-norm or the infinity-norm, using the LU factorization computed by DGETRF.

An estimate is obtained for norm(inv(A)), and the reciprocal of the condition number is computed as RCOND = 1 / ( norm(A) * norm(inv(A)) ).

• LAPACK documentation