Implemented the log-barrier constraint algorithm gradient and Hessian.
This implements equations 17.25 and 17.26 of Nocedal J. and Wright S. J. (1999), Numerical Optimisation, Springer Series in Operations Research. Springer-Verlag, New York.
Authored by: bugman 2014-09-01
Parent: [r169]
Child: [r171]
