passing functions handles to functions

[Christophe Prud'homme]

Hi again,

In octave, you can define function using 'function' and 'inline'
however functions like 'fzero' accepts only functions defined by 
'function' (and not inline) 

for example
---------------------------
function y = fun(x)
  y = x.^2 - 1 + exp(x);
end

fzero("fun", 1)
---------------------------
Ok

but 

--------------------------
 f=inline('x.^2 - 1 + exp(x)')
f =

f(x) = x.^2 - 1 + exp(x)

octave:2> argnames(f)
ans =

{
  [1,1] = x
}

octave:3> fzero('f',1)
error: feval: the symbol `f' is not valid as a function
error: evaluating assignment expression near line 358, column 5
error: evaluating if command near line 208, column 2
error: called from `fzero' in file 
`/usr/share/octave/site/m/octave-forge/optim/fzero.m'
-------------------------


in matlab inline, and strings can be used. 

is there a general rule in octave regarding passing function handles  ? 
like you can pass only functions handles of functions defined using 
'function' ?
or does it depend on the function using the function handle like fzero ?
or am I missing something ?

Best regards
C.
-- 
Christophe Prud'homme
Office MA B2 534
CMCS-IACS EPFL
CH-1015 Lausanne, Switzerland
Tel: +41 (0)21 693 25 47
Fax: +41 (0)21 693 43 03



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