On 14 February 2010 at 12:58, Christophe Genolini wrote:
| Hi the list,
|
| In a package P1, I write a function f1 in C, potentially an internal
| function (not to be called from R).
| In a package P2, I write a function f2 in C. The f2 function needs to
| use f1 from P1. Is it possible ?
Yes. See 'Writing R Extension' on LinkingTo. You can register f1 for use by
the others, if P2 has a LinkingTo: on P1 then you're good. The 'classic'
example is for lme4 using (large) parts of Matrix.
Dirk
| --- 8< ---- In file P1.c ---------
| double f1(x,y){
| ....
| }
|
| --- 8< ---- In file P2.c ---------
| void f2(x,y,z){
| double result;
| ....
| result = f1(x,y);
| ....
| }
|
| Thanks
| Christophe
|
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