[Rcpp-devel] deprecated log_max warning

[Yixuan Qiu]

It looks like a "bug" of Armadillo. In fn_trunc_exp.hpp, trunc_exp()
calles Math<eT>::log_max() that has already been labeled deprecated.


Best,
Yixuan

2016-04-21 15:51 GMT-04:00 Dirk Eddelbuettel <edd at debian.org>:
>
> Hi Yue,
>
> On 21 April 2016 at 15:44, Yue Li wrote:
> | Dear List,
> |
> | Just a super naive (dumb) question: after upgrading to RcppArmadillo_0.6.700.3.0 Rcpp_0.12.4, I receive compilation warning ''log_max' has been explicitly marked deprecated here” on every line of my code that uses ‘trunc_exp’ or ‘trunc_log’.
> |
> | I wonder how to fix this. The code to reproduce the warning and the log are pasted below. I got the same warning on Linux server as well.
>
> Many of us use Rcpp and RcppArmadillo daily but I have not seen this.  I
> gather that you use OS X -- so I presume this is clang?  What version?
>
> Do you set particular compiler flags?  I often use --pendantic.
>
> Did you try adding -Wno-deprecated-declarations as suggested?
>
> Did you chase down which header files this is from?
>
> Lastly, did you poke into the Armadillo header?  From the top of my head I
> seem to recall that there is a define to suppress error mesages too.
>
> Dirk
>
> |
> | Thanks a lot in advance,
> | Yue
> |
> | Code:
> |
> | #include <RcppArmadillo.h>
> |
> | // [[Rcpp::depends("RcppArmadillo")]]
> |
> | // [[Rcpp::export]]
> | double trunc_exp_Rcpp(double x) {
> |
> |   return arma::trunc_exp(x);
> | }
> |
> | Outputs log:
> |
> | > Rcpp::sourceCpp('tmp.cpp')
> | In file included from tmp.cpp:1:
> | In file included from /Library/Frameworks/R.framework/Versions/3.2/Resources/library/RcppArmadillo/include/RcppArmadillo.h:31:
> | In file included from /Library/Frameworks/R.framework/Versions/3.2/Resources/library/RcppArmadillo/include/RcppArmadilloForward.h:46:
> | In file included from /Library/Frameworks/R.framework/Versions/3.2/Resources/library/RcppArmadillo/include/armadillo:458:
> | /Library/Frameworks/R.framework/Versions/3.2/Resources/library/RcppArmadillo/include/armadillo_bits/fn_trunc_exp.hpp:23:60: warning: 'log_max' is deprecated [-Wdeprecated-declarations]
> |   if(std::numeric_limits<eT>::is_iec559 && (x >= Math<eT>::log_max() ))
> |                                                            ^
> | tmp.cpp:8:16: note: in instantiation of function template specialization 'arma::trunc_exp<double>' requested here
> |   return arma::trunc_exp(x);
> |                ^
> | /Library/Frameworks/R.framework/Versions/3.2/Resources/library/RcppArmadillo/include/armadillo_bits/constants_old.hpp:50:29: note: 'log_max' has been explicitly marked deprecated here
> |   arma_deprecated static eT log_max()   { static const eT out = std::log(std::numeric_limits<eT>::max()); return out; }  // use datum::log_max instead
> |                             ^
> | 1 warning generated.
> | > sessionInfo()
> | R version 3.2.4 (2016-03-10)
> | Platform: x86_64-apple-darwin13.4.0 (64-bit)
> | Running under: OS X 10.11.4 (El Capitan)
> |
> | locale:
> | [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
> |
> | attached base packages:
> | [1] stats     graphics  grDevices utils     datasets  methods   base
> |
> | loaded via a namespace (and not attached):
> | [1] tools_3.2.4               RcppArmadillo_0.6.700.3.0 Rcpp_0.12.4
> | >
> | _______________________________________________
> | Rcpp-devel mailing list
> | Rcpp-devel at lists.r-forge.r-project.org
> | https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
> --
> http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
> _______________________________________________
> Rcpp-devel mailing list
> Rcpp-devel at lists.r-forge.r-project.org
> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel



-- 
Yixuan Qiu <yixuan.qiu at cos.name>
Department of Statistics,
Purdue University