Displaying 3 results from an estimated 3 matches for "diklevich".
2010 Dec 09
1
Dynamically build functional expression and taking derivative
Hi!
I'm faced the next problem:
suppose I have a vector of some coefficient and for some purpose from
these coefficients I need dynamically build a functional expression
(because, the number of elements in the vector of coefficients might
differ each time). So, I'm trying to do like this (let the number of
coefficients be 3):
Building expression
> foo <-
2010 Dec 02
1
Strange problems with compiling dll
Dear sir\madam!
I'm trying to speed up my R code by writing quite simple dll's in C. But I
faced some problems, and I cannot determine their source.
#include <Rinternals.h>
SEXP mycombin(SEXP N, SEXP k){
int i, *j, *l, c;
j = INTEGER(k);l = INTEGER(N);
c = 1;
if(j[0] > 0 && j[0] < l[0]){
if(j[0] <= l[0] - j[0]){
for(i =
2010 Dec 03
1
Strange problems with compiling dll
Dear sir\madam!
I'm trying to speed up my R code by writing quite simple dll's in C. But I
faced some problems, and I cannot determine their source.
#include <Rinternals.h>
SEXP mycombin(SEXP N, SEXP k){
int i, *j, *l, c;
j = INTEGER(k);l = INTEGER(N);
c = 1;
if(j[0] > 0 && j[0] < l[0]){
if(j[0] <= l[0] - j[0]){