[Clp] (no subject)

[John Forrest]

Jack,

Use an editor to modify ClpMain.cpp.

Change all  %15.8g to %17.10g (or use %..f) - that should do it. The 8 
accuracy is why you get the ,80.

If that is OK then I can modify to allow user to use something like 
-DOUTPUT_FORMAT=17.10g in configure to override default.

John Forrest

On 15/07/13 05:19, Jack Hagart wrote:
> Hello everyone from CLP mail list. I need a help.
> I´m using the CLP to a software I developed. CLP works very well to 
> me. The problem is, when I started use some real data, with numbers 
> greater, the CLP output file is using round to the values of the 
> variables in the solution.
> I implemented the same mathematical model in GAMS/CPLEX, with exactly 
> same input data, and see the result:
>
> 	CLP 	GAMS/CPLEX
> 1 	$43.597.637,00 	$43.597.636,76
> 2 	$23.108.017,00 	$23.108.017,02
> 3 	$44.053.085,00 	$44.053.085,30
> 4 	$7.624.834,80 	$7.624.834,80
> 5 	$17.312.266,00 	$17.312.265,81
> 6 	$11.199.682,00 	$11.199.682,39
> 7 	$16.631.305,00 	$16.631.304,60
> 8 	$9.903.795,80 	$9.903.795,82
> 9 	$10.465.548,00 	$10.465.548,33
> 10 	$12.723.051,00 	$12.723.051,42
> 11 	$8.210.366,70 	$8.210.366,68
>
>  For example, the line 1. The right solution, that one that respects 
> all the constraints, is $43.597.636,76, or the GAMS/CPLEX solution. 
> The CLP plot $43.597.637,00. Its the same solution, but CLP round the 
> decimals, and put 637 in the place of 636,76.
> The same is happening with others values of the solution. But one 
> thing is strange. Take a look in the lines 4 and 8. In this cases, CLP 
> didn´t round the values!
> This is happening just to numbers greater than 10 million. I tried 
> change the option output to 4 and 6 to improve precision but it didn´t 
> worked to CLP 1.14.4.
> Can someone help me with new ideas?
> A small piece of the original CLP solution report is bellow. The 
> variable f(1,13) is that one in line 1 in the table above.
> optimal
> Objective value -1.6527462e+008
>       1 f(24,27)               1.6526604e+008 0
>       5 f(1,13) 43597637                       0
>       7 f(13,14) 43597637                      0
>      10 f(2,14) 23108017                      0
>      14 f(3,15) 44053085                      0
>      18 f(4,16) 7624834.8                      0
> Best Regards,
> Jack
>
>
>
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