converting to new streampos syntax ?

[Pascal A. Dupuis]

There was a recent change in the interface of ftell, now returning a streampos
object. How can I now perform the following operations ?

1) tell if a stream is seekable. Old way:
        cur_pos = ftell(FID);  cur_pos > -1 || error('Can''t seek');
2) push back one character onto a stream. Old way:
        fseek(FID, cur_pos - 1);

   according to the C++ standards, streampos is an object dealing with
characters streams, so going back one character should be valid.

Thanks in advance

Pascal Dupuis

-- 
Dr. ir. Pascal Dupuis
K. U. Leuven, ESAT/ELECTA (formerly ELEN):  http://www.esat.kuleuven.ac.be/
Kasteelpark Arenberg, 10; B-3001 Leuven-Heverlee, Belgium
Tel. +32-16-32 10 21 -- Fax +32-16-32 19 85



-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
-------------------------------------------------------------