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Problem compiling fsolve.cc from octave-forge/FIXES
From: |
Michael Kopp |
Subject: |
Problem compiling fsolve.cc from octave-forge/FIXES |
Date: |
Tue, 10 May 2005 11:50:15 +0200 |
User-agent: |
Mozilla Thunderbird 1.0 (X11/20041206) |
Hi all,
I was just trying to compile fsolve.cc from octave_forge/FIXES
(a link to the file can be found here:
http://octave.sourceforge.net/index/optimization.html#Rootfinding).
I used the command "mkoctfile fsolve.cc" on a PC with Suse Linux 9.1. My
version of gcc is 3.3.3.
I got the following error message:
**********************************************************************
fsolve.cc:260: error: cannot convert `double (NLEqn_options::*)() const'
to `double (NLEqn_options::*)()' in initialization
**********************************************************************
The relevant code from fsolve.cc seems to be
**********************************************************************
struct NLEQN_OPTIONS
{
const char *keyword;
const char *kw_tok[MAX_TOKENS + 1];
int min_len[MAX_TOKENS + 1];
int min_toks_to_match;
d_set_opt_mf d_set_fcn;
d_get_opt_mf d_get_fcn;
};
static NLEQN_OPTIONS fsolve_option_table [] =
{
{ "tolerance",
{ "tolerance", 0, },
{ 1, 0, }, 1,
&NLEqn_options::set_tolerance,
&NLEqn_options::tolerance, }, // here is the problem
{ 0,
{ 0, 0, },
{ 0, 0, }, 0,
0, 0, },
};
**********************************************************************
The problem is in the line &NLEqn_options::tolerance. If I outcomment
this, the rest compiles fine. From
http://pareto.uab.es/mcreel/OctaveClassReference/html/index.html
I get the following information:
**********************************************************************
NLEqn_options Class Reference
Public Member Functions
NLEqn_options (void)
NLEqn_options (const NLEqn_options &opt)
NLEqn_options & operator= (const NLEqn_options &opt)
~NLEqn_options (void)
void init (void)
void copy (const NLEqn_options &opt)
void set_options (const NLEqn_options &opt)
void set_default_options (void)
void set_tolerance (double val)
double tolerance (void) const
**********************************************************************
So the tolerance function is indeed declared with const. Unfortunately,
my rudimentary knowledge of C++ does not allow me to find a workaround
other than outcommenting the entire line. Does anyone have a better
solution?
Thanks in advance,
Michael.
--
Michael Kopp
Department Biologie II
University of Munich (LMU)
Grosshaderner Strasse 2
82152 Plannegg-Martinsried
Germany
Phone: ++49-89-2180-74233
Email: address@hidden
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