[Help-glpk] proposal on suffices for variables and constraints in MathProg

[Andrew Makhorin]

I propose to implement the following suffices for variables and
constraints in MathProg:

.lb      lower bound or -Infinity
.ub      upper bound or +Infinity
.status  status:
         0 - undefined
         1 - basic
         2 - non-basic on lower bound
         3 - non-basic on upper bound
         4 - non-basic free
         5 - non-basic fixed
.val     primal value
.dual    dual value (combined Lagrange multiplier, reduced cost)

Any comments and suggestions are appreciated.


Andrew Makhorin