From mathieu.ribatet at epfl.ch  Sun Feb  8 23:52:30 2009
From: mathieu.ribatet at epfl.ch (Mathieu Ribatet)
Date: Sun, 08 Feb 2009 23:52:30 +0100
Subject: [Rd] Strange behavior of C compiled program
In-Reply-To: <498F5EA4.3060307@u-paris10.fr>
References: <498F5EA4.3060307@u-paris10.fr>
Message-ID: <1234133550.6331.1.camel@mathieu-laptop>

Hi Christophe,

The problem might be that you used %d when printing. I guess that your
variables dist and tmp are double so you have to use %f instead.

Best,
Mathieu

Le dimanche 08 f?vrier 2009 ? 23:37 +0100, Christophe Genolini a ?crit :
> Hi the list,
> 
> I need to include some C code in R, but the behavior of the C code is 
> strange : Here is my code :
> --- 8< ---
>     Rprintf("\n XXXX mTraj=%f 
> mClus=%f",mTraj[i+nbId*c],mClustersCenter[j+nbClusters*c]);
> 
>     Rprintf("\nDistA=%d Tmp=%d",dist,tmp);
>             tmp = mTraj[i+nbId* c] - mClustersCenter [j+nbClusters* c];
> 
>     Rprintf("\nDistB=%d Tmp=%d",dist,tmp);
>             dist += (tmp * tmp);
> 
>     Rprintf("\nDistC=%d Tmp=%d",dist,tmp);
> --- 8< ----
> 
> Herer are the stranges results it gives :
> 
> XXXX mTraj=1.000000 mClus=3.000000
> DistA=0 Tmp=0
> DistB=0 Tmp=0
> DistC=0 Tmp=1074790400
> 
> I ask on a C chat, but no one can answer me.
> Any idea of what wrong ?
> 
> Thanks
> Christophe
> 
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
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[Rd] Strange behavior of C compiled program
Mathieu Ribatet