Dear Rcpp folks,
could you please give me a hint on how to use `printf`.
library(inline)
inc <- "
#include <stdio.h>
"
drucken <-cxxfunction(includes=inc, plugin="Rcpp", body="
unsigned int length = 1;
printf("%u\\n", length);
return wrap(length);
")
throws the following error, when I try to source it.
> source("/tmp/printf.r")
Error in source("/tmp/printf.r") : /tmp/printf.r:8:11: unexpected input
7: unsigned int length = 1;
8: printf("%u\\n", length);
Removing the `printf` statement gets rid of the error. I tested the
standalone example and `gcc` does not complain.
/* printf example */
#include <stdio.h>
int main()
{
unsigned int length = 1;
printf("%u \n", length);
return length;
}
Probably my mistake is a simple one because
> source("/usr/lib/R/site-library/Rcpp/examples/RcppInline/RcppInlineWithLibsExamples.r")
works and `printf` statements are used in there. (I had to install
`libgsl0-dev` to get the headers.)
Thanks,
Paul
/* printf example */
#include <stdio.h>
int main()
{
unsigned int length = 1;
printf("%u \n", length);
return length;
}
library(inline)
inc <- "
#include <stdio.h>
"
rw <-cxxfunction(includes=inc, plugin="Rcpp", body="
unsigned int length = 1;
printf("%u\\n", length);
return wrap(length);
")
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