Having a hard time picking up C :( Thanks a lot for all your time .
tong
----- Original Message -----
From: Peter Dalgaard <[EMAIL PROTECTED]>
Date: Wednesday, April 4, 2007 12:44 am
Subject: Re: [Rd] Strange number produced by dnorm
To: Tong Wang <[EMAIL PROTECTED]>
Cc: R-devel <r-devel@r-project.org>
> Tong Wang wrote:
> > Hi All,
> > I just started to learn compiling C codes for R usage, and
> got a problem when I was playing with my 'hello world' code.
> >
> > #include <R.h>
> > #include <Rdefines.h>
> > #include <Rmath.h>
> >
> > SEXP test( ) {
> > double x;
> > x=dnorm(1.0,0.0,1.0,1);
> > printf(" x value is: %d \n",x);
> > return(R_NilValue);
> > }
> >
> > I got the result : x value is: -466460838
> >
> > Could someone explain to me what was wrong here ?
> >
> >
> Wrong printf format. "%d" is for integers.
>
>
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