[Help-glpk] info about glpk

[Marco Stenico]

Hi people, I've just downloaded glpk and read some documentation. I have some questions:

 

1. What kind of number representation does glpk use? floating point?

2. Does it deal with number overflow?

3. I read it performs preprocessing. Preprocessing will delete empty    rows/columns and convert constraints on just one variable to lower/upper bounds. But does it perform other kinds of preprocessing?

4. I want to use B&B to find only a feasible (not optimal) integer solution. How can I do it?
5. after solving LP problems with simplex method, I read, glpk stores some useful information. If I added new constraints or new variables, could I use that information to solve the new LP problem faster?

 

Thanks

Marco

 

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