Re: How to call builtin functions

[Paul Kienzle]

Ganesh,

Since you are running stand-alone, you don't need to go
through octave to call functions.  Instead you can call them
directly.  For the most part, the builtin functions are small
wrappers around liboctave.  For example, the file
src/DLD-FUNCTIONS/rand.cc wraps the octave_rand
class defined in liboctave/rand.h.

That said, for rand I would grab randmtzig.c from
octave-forge/FIXES since it is about 3x faster.

- Paul

On Jul 25, 2004, at 6:19 PM, Ganesh Bikshandi wrote:

> Hi,
>
> I need to call builtin functions from a stand alone c++ (not a .oct
> function) program. I tried calling a function (rand) using feval. But
> for that I need to initialize the symbol table (fbi_sym_tab) and
> install the builtin functions.  Otherwise my program seg faults. I
> allocated fbi_sym_tab  and called install_builtins(), but I get lot of
> warning, and the function (rand) was not installed.  Hence, I get the
> error message:
>
> error: feval: the symbol `rand' is not valid as a function
>
> 1. Can anyone, who had succeeded in calling a builtin function from a
> standalone program, share with me the simplest way to install the
> builtin functions?
>
> Ganesh



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