[R] question on suppressing error messages with Rmath library

[Ranjan Maitra]

Hi Luke,

Thanks! Sorry, my error which I did not realize until after sending out the program. I think I will just extricate the pnt code and compile that separately and that should be fine.

Thanks very much again, to you and everybody else who replied.

Best wishes,
Ranjan


On Wed, 21 Mar 2007 10:04:05 -0500 (CDT) Luke Tierney <luke at stat.uiowa.edu> wrote:

> You might get less noise in the replies if you were explicit about
> using Rmath stand-alone and asked on r-devel.
> 
> As far as I can see you would need to compile a version of the
> stand-alone library that defines the macros for handling of warning
> messages differently -- the current one just calls printf in the
> stand-alone library.  (You might be able to trick the linker into using
> a version of printf for calls from within Rmath that does nothing, but
> I suspect recompiling the sourses is easier.)  We will probably be
> rethinking this soon in conjunction with some other changes to
> vectorized math in R.
> 
> 
> Best,
> 
> luke
> 
> On Wed, 21 Mar 2007, Ranjan Maitra wrote:
> 
> > Dear list,
> >
> > I have been using the Rmath library for quite a while: in the current instance, I am calling dnt (non-central t density function) repeatedly for several million. When the argument is small, I get the warning message:
> >
> > full precision was not achieved in 'pnt'
> >
> > which is nothing unexpected. (The density calls pnt, if you look at the function dnt.) However, to have this happen a huge number of times, when the optimizer is churning through the dataset is bothersome, but more importantly, a bottleneck in terms of speed. Is it possible to switch this off? Is there an setting somewhere that I am missing?
> >
> > Many thanks and best wishes,
> > Ranjan
> >
> > ______________________________________________
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> >
> 
> -- 
> Luke Tierney
> Chair, Statistics and Actuarial Science
> Ralph E. Wareham Professor of Mathematical Sciences
> University of Iowa                  Phone:             319-335-3386
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