precision in solution file "all"

[raller09]

Hi,

im testing with cbc solution files and my model.

Model.zip

CBC.exe "model.mps" 
-directory "%Temp%" 
-solve 
-printingOptions all -solution "all.cbc" 
-printingOptions allcsv -solution "allcsv.cbc"

with model.mps i want y23 = 12345.670000

This is how cbc solves it. But when I add the values ​​from x1 to x36 from "all.cbc", the result is 12345.66996

cbc uses #define CLP_OUTPUT_FORMAT % 15.8g

I assume precision with "g" means: Precision specifies the maximum number of significant digits output. 15 characters but only 8 significant digits.

Since the current format is certainly used by many, I have created an additional "allcsv" format in which the values ​​are separated by commas and "%.15g" is used.

Please check my changes.

I think the output could also be used for other outputs such as "normal" and "rows"?

Since pulp also uses the "all" format, I'm a little surprised that the accuracy there was sufficient.

Thank you for your great work.