replicating C example from the Extensions Manual problem

Seems you're missing the required header(s). Can't find the example in
the extensions manual but you probably need

#include <Rinternals.h>

or

#include <Rdefines.h>

HTH,

Peter
Dear R People:

Here is something that I am sure is very simple. ?I'm just trying to
re-create the C convolution example in the Extensions manual. ?Here is
the subroutine:

void convolve(double *a, int *na, double *b, int *nb, double *ab)
{
R_len_t i, j, nab = *na + *nb - 1;
for(i = 0; i < nab; i++)
ab[i] = 0.0;
for(i = 0; i < *na; i++)
for(j = 0; j < *nb; j++)
ab[i + j] += a[i] * b[j];
}

And here are the results from trying to compile:

erin at ubuntu:~$ R CMD SHLIB convolve.c
gcc -std=gnu99 -I/usr/share/R/include ? ? ?-fpic ?-O3 -pipe ?-g -c
convolve.c -o convolve.o
convolve.c: In function ?convolve?:
convolve.c:3:1: error: unknown type name ?R_len_t?
make: *** [convolve.o] Error 1

What is wrong, please?

This is on Ubuntu 11.10 with R-2.14.2. ?I'm sure that it's totally goofy.

Thanks,
Erin

--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodgess at gmail.com

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replicating C example from the Extensions Manual problem

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