Major feasibility tolerance

This specifies how accurately the nonlinear constraints should be satisfied.  The default value of 1.0e-6 is appropriate when the linear and nonlinear constraints contain data to about that accuracy.

Let rowerr be the maximum nonlinear constraint violation, normalized by the size of the solution.  It is required to satisfy

where viol_r, is the violation of the ith nonlinear constraint (i = 1:nnCon).

In the major iteration log, rowerr appears as the quantity labeled "Feasible''.  If some of the problem functions are known to be of low accuracy, a larger Major feasibility tolerance may be appropriate.