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[Help-glpk] implementation of gnu lp format

From: Andrew Makhorin
Subject: [Help-glpk] implementation of gnu lp format
Date: Sat, 24 Jul 2004 20:39:21 +0400

Here is an implementation of GNU LP format for glpk 4.5 (please see
the attachment). MD5 check-sum is the following:

f40a564b4430d8e301c752faba489bf9 *gnu_lp.tar.gz

To upgrade the package you need to add src/glplpx8e.c (that also
requires to add corresponding line to src/ and replace
include/glplpx.h and examples/glpsol.c, and then recompile/reinstall
the package as usual. Note that these changes will appear in the next
official release of the package.

GNU LP format is a low-level text format for coding LP/MIP instances and
can be used as a replacement of MPS format.

There are two api routines glp_read_prob and glp_write_prob, which are
intended to read and write problem data in GNU LP format.

Three new options were added to glpsol: `--glp filename' to read problem
data in GNU LP format, `--wglp filename' to write problem data in GNU LP
format, `--name probname' to change the problem name.

Andrew Makhorin

Attachment: gnu_lp.tar.gz
Description: GNU Zip compressed data

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