;; This is the simulated annealing algorithm discuused by Corana
;; et al in ACM Transactions on Mathematical Software, 13, 1987,
;; 262 - 280. It has been used (and slightly adapted) by Goffe
;; et al in Journal of Econometrics, 60, 1994, 65-100.
;;
;; FORTRAN code from Goffe is in simann.f

By Jan de Leeuw