That is great example of why folks should NOT use the .C() interface.
Rcpp can help here, __even if you do not use any Rcpp language features__.
Below is a showcase for the recent sourceCpp() function which takes a C++
file (shown below), converts it and optionally runs the embedded R
code. Think
Hello,
The double in R and the double in C are the same type, with the same
number of decimals (64 bits), so it's not because the numbers are too long.
Try calling .C("function", other parameters, result = double(quantity)).
Or maybe the error is in the C code, of which we know nothing about.
Hi everybody,
here's my problem:
i call a C function which calculates a large number of double values and
puts them into an array which is passed from R as a parameter in the
function (like .C("function", other parameters, result = as.double( c ( 1
: quantity ) ).
When the values come back to
