[GenABEL-dev] Fwd: CRAN packages with C++11 errors on isnan or isinf

[L.C. Karssen]

Aha, a bit more detailed explanation of the fixes I implemented earlier.
I opted for the std:isnan() from c++11.


Thanks for sharing this info,

Lennart.

On 11/10/2013 09:23 AM, Yurii Aulchenko wrote:
> fyi
> 
> ---------- Forwarded message ----------
> From: *Prof Brian Ripley* <ripley at stats.ox.ac.uk
> <mailto:ripley at stats.ox.ac.uk>>
> Date: Sun, Nov 10, 2013 at 9:19 AM
> Subject: CRAN packages with C++11 errors on isnan or isinf
> To: Yurii Aulchenko <yurii at bionet.nsc.ru <mailto:yurii at bionet.nsc.ru>>,
> Daniel Taliun <Daniel.Taliun at eurac.edu
> <mailto:Daniel.Taliun at eurac.edu>>, Cedric E Ginestet
> <cedric.ginestet at kcl.ac.uk <mailto:cedric.ginestet at kcl.ac.uk>>, Philip
> Johnson <plfjohnson at emory.edu <mailto:plfjohnson at emory.edu>>, Franck
> Picard <franck.picard at univ-lyon1.fr
> <mailto:franck.picard at univ-lyon1.fr>>, The Minh Luong <luongtm at yahoo.com
> <mailto:luongtm at yahoo.com>>
> Cc: CRAN <CRAN at r-project.org <mailto:CRAN at r-project.org>>
> 
> 
> This concerns packages
> 
> DatABEL GWAtoolbox GenABEL LDExplorer NetworkAnalysis adaptivetau cghseg
> postCP
> 
> for which we have reported errors on g++ 4.8.x (and clang++ using g++
> headers showing on the CRAN check pages) like
> 
> CastUtils.cpp: In function 'bool checkNan(void*, int)':
> CastUtils.cpp:189:38: error: call of overloaded 'isnan(double&)' is
> ambiguous
>           return isnan(*(double*) data);
> 
> isnan is a macro in C99 included in <math.h>.
> 
> isnan is a function in C++11 in <cmath>, overloaded for float, double
> and long double and maybe more types.
> 
> In tracking down a similar issue we found it was due to including both
> <math.h> and <cmath>.  That package did so explicitly, but it is easy
> for this to be done by other headers you include.
> 
> A remedy was to use std::isnan if you want the C++11 version and ::isnan
> if you want the C99 version.  But note that C++98 (the default standard)
> includes neither, so the most portable thing to do is to use R's ISNAN
> via header <R.h> (and for safety include that header after all the
> system ones).
> 
> 
> isinf is analogous, with R_FINITE available.
> 
> -- 
> Brian D. Ripley,                  ripley at stats.ox.ac.uk
> <mailto:ripley at stats.ox.ac.uk>
> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~__ripley/
> <http://www.stats.ox.ac.uk/~ripley/>
> University of Oxford,             Tel:  +44 1865 272861
> <tel:%2B44%201865%20272861> (self)
> 1 South Parks Road,                     +44 1865 272866
> <tel:%2B44%201865%20272866> (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
> <tel:%2B44%201865%20272595>
> 
> 
> 
> -- 
> -----------------------------------------------------
> Yurii S. Aulchenko
> 
> [ LinkedIn <http://nl.linkedin.com/in/yuriiaulchenko> ] [ Twitter
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> <http://yurii-aulchenko.blogspot.nl/> ]
> 
> 
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-- 
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
L.C. Karssen
Utrecht
The Netherlands

lennart at karssen.org
http://blog.karssen.org
GPG key ID: A88F554A
-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-

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