[rrd-users] CDEF,RPN, no decimal constant possible?

Peter pspiegler at gmx.de
Fri Jul 11 00:26:28 CEST 2014

>You didn't say which version of RRDTool you're using; I'm assuming 1.4.x

Yes. I have cloned the github branch 1.4 (v 1.4.8) and compiled rrdtool and
rrdlib with Visual Studio 2013. 

>The RPN parsing happens in rrd_rpncalc.c in function rpn_parse() (called by
>This explicitly sets locale to be "C"; then it tries to use sscanf with
"%lf" which should 
>correctly read in a decimal, regardless of your current locale using commas
as a decimal 
>separator or not. 

I have the source in VS2013, so I can debug the code to find the position
where the decimal conversion failed. 


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