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[Bug-glpk] Writing CPLEX LP files
From: |
Bernhard Schmidt |
Subject: |
[Bug-glpk] Writing CPLEX LP files |
Date: |
Fri, 22 Aug 2003 15:49:16 +0200 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.0.2) Gecko/20030208 Netscape/7.02 |
It seems that
case LPX_FR:
fprintf(fp, " c%d free\n", j);
in the source file glplpx8c.c should be replaced by something like
case LPX_FR:
fprintf(fp, " %s free\n", cname);
Otherwise errors occur when writing CPLEX LP files for problems
with free variables (see attachment for an example).
Bernhard Schmidt
* Problem: UNKNOWN
* Class: LP
* Rows: 3
* Columns: 5
* Non-zeros: 15
*
NAME
ROWS
N R0000000
G R0000001
L R0000002
E R0000003
COLUMNS
C0000001 R0000000 -90 R0000001 93
C0000001 R0000002 45 R0000003 -61
C0000002 R0000000 -53 R0000001 -14
C0000002 R0000002 76 R0000003 -59
C0000003 R0000000 -69 R0000001 -99
C0000003 R0000002 6 R0000003 6
C0000004 R0000000 -84 R0000001 -67
C0000004 R0000002 72 R0000003 -87
C0000005 R0000000 46 R0000001 78
C0000005 R0000002 -28 R0000003 72
RHS
RHS1 R0000001 -46 R0000002 32
RHS1 R0000003 -42
RANGES
RNG1 R0000003 100
BOUNDS
FR BND1 C0000001
LO BND1 C0000002 -193
UP BND1 C0000002 7
LO BND1 C0000003 -168
UP BND1 C0000003 32
LO BND1 C0000004 -148
UP BND1 C0000004 52
LO BND1 C0000005 -164
UP BND1 C0000005 36
ENDATA
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