[Rcpp-devel] round function not found?

[Hideyoshi Maeda]

Does round work on a matrix?


On Tue, Mar 4, 2014 at 11:53 AM, Ahmadou Dicko <dicko.ahmadou at gmail.com>wrote:

> Hi,
>
> `round` is part of Rcpp sugar for a long time now (
> http://dirk.eddelbuettel.com/blog/2012/10/01/).
> The way you use round is wrong you need to supply two arguments ('x' and
> 'digits'), Rcpp::round just wrap Rf_fround
>  (which is an alias for fround) in Rmath.h so you can check in this file
> the right signature.
>
>
> #include <Rcpp.h>
> using namespace Rcpp ;
>
> // [[Rcpp::export]]
> NumericVector h1(int samp, int wind){
>     return round(runif(samp*3)* wind, 0);
>
> }
>
>
> Hope this help
>
>
>
>
>
> On Tue, Mar 4, 2014 at 11:30 AM, Hideyoshi Maeda <
> hideyoshi.maeda at gmail.com> wrote:
>
>> Hi Rcpp devel list
>>
>> I am trying to run the following code but for some reason it says that
>> there is "no matching function for call to 'round'"
>>
>> #include <Rcpp.h>
>> using namespace Rcpp;
>>
>> // [[Rcpp::export]]
>> Rcpp::IntegerVector h1(int samp, int wind){
>>   return round(runif(samp*3)*wind);
>> }
>>
>> I thought round was part of Rcpp sugar? is it not?
>>
>> thanks
>>
>>
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>>
>
>
>
> --
> Ahmadou H. DICKO
> statistician economist (Ingénieur Statisticien Économiste)
> PhD candidate in Climate change economics
> Faculty of economics and managment - Cheikh Anta Diop University
> West African Science Service Center on Climate Change and Adaptated Land
> Use (WASCAL)
> Center for Development Research (ZEF) - University of Bonn
> email : ahmadou.dicko at ucad.edu.sn
> twitter : @dickoah
> github : github/dickoa <https://github.com/dickoa>
> tel : +221 33 827 55 16
> portable: +221 77 123 81 69
>
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