Your message dated Sat, 28 Jan 2012 01:37:58 +0530 (IST)
with message-id <[email protected]>
and subject line Re: Bug#657573: r-mathlib: The following code (using rgamma)
hangs
has caused the Debian Bug report #657573,
regarding r-mathlib: The following code (using rgamma) hangs
to be marked as done.
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--
657573: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=657573
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: r-mathlib
Version: 2.14.1-1
Severity: normal
Hi Dirk,
The following C++ code hangs, with both r-mathlib 2.11.1-6 and
2.14.1-1. The problem is the rgamma function, but I have not attempted
to debug it. Any idea what is going on here? Thanks.
#define MATHLIB_STANDALONE
#include <Rmath.h>
#include <iostream>
using std::cout;
using std::endl;
// double rgamma(double a, double scale)
// Input: a = parameter (mean) of the standard gamma distribution.
int main(void)
{
set_seed(0, 0);
cout << "gets to here" << endl;
rgamma(1, 1);
}
-- System Information:
Debian Release: 6.0.3
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable'), (50, 'unstable'), (50,
'testing'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-5-vserver-686-bigmem (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages r-mathlib depends on:
ii libc6 2.11.2-10 Embedded GNU C Library: Shared lib
ii libgomp1 4.7-20111231-1 GCC OpenMP (GOMP) support library
Versions of packages r-mathlib recommends:
ii r-base-core 2.11.1-6 GNU R core of statistical computat
pn r-base-dev <none> (no description available)
r-mathlib suggests no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
Hi Dirk,
On Fri, 27 Jan 2012, Dirk Eddelbuettel wrote:
Also:
edd@max:/tmp$ cat faheem.cpp
#define MATHLIB_STANDALONE
#include <Rmath.h>
#include <iostream>
using std::cout;
using std::endl;
int main(void)
{
set_seed(0, 0);
cout << "one normal " << norm_rand() << endl;
}
edd@max:/tmp$ g++ -o faheem faheem.cpp -lRmath; ./faheem
one normal -inf
edd@max:/tmp$
It should be more tolerant to (0,0), I presume. In any event, if ther eis a
bug (in terms of this not being documented), there is nothing Debian-specific
here and stricly nothing I can do for you.
I suggest to close this, and encourage you to report this on r-devel.
Ok, closing as you wish.
Just wanted to check, can you reproduce this problem?
Also, have you any idea what is going on with the get_seed/set_seed
functions? See my earlier emails about this.
Regards, Faheem
--- End Message ---
