Re: feval call to a subfunction fails when it is in a subfunction

[Ben Abbott]

On Sep 30, 2009, at 9:53 PM, Ben Abbott wrote:

> On Sep 30, 2009, at 9:40 PM, Sidney Markowitz wrote:
>
> > I'm new to using Octave and don't know if this is a bug in my code, a
> > bug in Octave, or something wrong with my installed copy of Octave.
> >
> > The following code demonstrates the problem. The first feval, in the
> > main function, works and the result is displayed. The other feval,
> > inside the subfunction switchyard2, gets an error in line 9
> > error: feval: function `mysin' not found
> >
> > I am using Octave version 3.2.2 compiled on my Macbook under MacOS
> > 10.6.1, downloaded and built from Macports. I put the following text
> > in
> > a file named ./switchyard.m and invoked it in the Octave command
> > line by
> > typing   switchyard(10)
> >
> > Do others get the same results? Is there a bug in my example code?
> > Is it
> > a bug in Octave?
> >
> > function y = switchyard(x)
> >   z = feval('mysin', x);
> >   disp(z);
> >   y = switchyard2(x);
> >  return;
> > endfunction
> >
> > function y = switchyard2(x)
> >  y = feval('mysin', x);
> >  return;
> > endfunction
> >
> > function y= mysin(x)
> >  y = sin(x);
> > return;
> > endfunction
>
>
> It appears that I'm getting the same.
>
> octave-3.2.2:4> switchyard(pi)
>  1.2246e-16
> error: feval: function `mysin' not found
> error: called from:
> error:   /Users/bpabbott/switchyard.m at line 9, column 5
> error:   /Users/bpabbott/switchyard.m at line 4, column 6
>
> 01 function y = switchyard(x)
> 02    z = feval('mysin', x);
> 03    disp(z);
> 04    y = switchyard2(x);
> 05   return;
> 06 endfunction
> 07
> 08 function y = switchyard2(x)
> 09   y = feval('mysin', x);
> 10   return;
> 11 endfunction
> 12
> 13 function y= mysin(x)
> 14   y = sin(x);
> 15  return;
> 16 endfunction
>
> I'm also running Mac OS 10.6.
>
> I'm presently building the developers sources, so I can't check them
> till tomorrow.
>
> Ben

With the developers sources, it works as expected.

octave:3> switchyard(pi)
 1.2246e-16
ans =  1.2246e-16

Ben