Re: [Help-glpk] String literal too long

[xypron]

Hello Yaron,


Yaron Kretchmer-2 wrote:
> 
> Hi All
> I'm getting a "String literal too long" error from glpsol when giving a
> (admittedly very long, but still valid) file path
> *table tab_results{f in F:x[f]>0} OUT "CSV"
> "YesImaverylongpathbutthatsOKfortheoperatingsystemsowhyisntitokforglpk.csv"
> :
> *
> **
> Is that because i'm violating some built-in max length setting? If so,
> what
> is it , can I change it , and if so, where ?
> 

The maximum length of a symbol is defined in include/gmpl.h to be 100
characters.

#define MAX_LENGTH 100
/* maximal length of any symbolic value (this includes symbolic names,
   numeric and string literals, and all symbolic values that may appear
   during the evaluation phase) */

The following model following your example solved without a problem because
the 
string length of the file name is "only" 73 characters.

set F := {1..3};
param x{f in F} := 3;
solve;
table tab_results{f in F:x[f]>0} OUT "CSV"
"YesImaverylongpathbutthatsOKfortheoperatingsystemsowhyisntitokforglpk.csv"
:
f;

Best regards

Xypron
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