| dgesvx(l): use LU factorization to compute ... - Linux man page |

| | Otherwise, the **factored** form of A is used to estimate the condition number of the matrix A. If the reciprocal of the condition number is less than machine precision, INFO = N+1 is returned as a warning, but the routine still goes on to solve for X and compute error bounds as described below. |

| | The system of equations is solved for X using the **factored** form of A. Iterative refinement is applied to improve the computed solution matrix and calculate error bounds and backward error estimates for it. |

| | Specifies whether or not the **factored** form of the matrix A is supplied on entry, and if not, whether the matrix A should be equilibrated before it is **factored**. |

| www.die.net /doc/linux/man/manl/dgesvx.l.html (1303 words) |