CONDEST

 

 Estimate the 1-norm condition number.

  Higham's modification of Hager's method.

  [C, V] = CONDEST(A) computes a lower bound C for the 1-norm condition

  number of A, and a vector V such that NORM3BIWKE7(A*V)=NORM3BIWKE7(A)*NORM3BIWKE7(V)/C.

  V is an approximate null vector if C is large.