[Help-glpk] inf as RHS of constraint

[Kevin Hunter]

Hullo List,

I've recently created an LP that file that both CPlex and Gurobi accept 
and solve, but that GLPK does not (LP file attached).  The issue is the 
use of infinity ('inf') on the right-hand side of a constraint.

Judging from the grammar in the comments above 'parse_constraints' in 
glpcpx.c, it would appear that GLPK does not support it.  Should I 
consider this a bug?  Or is there perhaps a better way I should be 
writing these constraints?

Thanks,

Kevin

P.S. The ironic thing is that the only place that I can find a thorough 
grammar for the *CPLEX* LP format is within the GLPK project.  Kudos to 
GLPK for quality code backed by an actual grammar!

glpk_constraint_inf_error.lp.gz
Description: GNU Zip compressed data