[Help-glpk] small coefficient in glpk?

[Yao Wu]

Hi all,

I'm using glpk 4.8 (via Java JNI
http://bjoern.dapnet.de/glpk/index.htm) as a feasibility solver. One
of my constraint is that the sum of structural variables = 1.

When some coefficients are very small, e.g. 1E-6, then the constraint
that the sum of structural variables = 1 is not enforced. I got all of
them with 0. If I ignore those small coefficients (<= 1E-6), the
constraint that the sum of structural variables = 1 is satisfied. But
I'm not sure if this will affect the accuracy of my program.

Does anyone know if glpk has some precision lower bound or this is a bug?

Thank you very much
Yao