Re: [Help-gsl] error handling in gsl_root_fsolver_set()

[Tommy Nordgren]

On 8 dec 2007, at 13.29, Tommy Nordgren wrote:

> On 7 dec 2007, at 00.19, jian Xu wrote:
>
> > Hello,
> >
> > I'm using gsl 1-D root finding algorithm, and I need to use
> > gsl_root_fsolver_set( ... ) to initilize the solver.  The problem is
> > whenever the root is NOT located inside the bounds, this function  
> > call
> > will immediately breaks the program.  And I cannot catch its error
> > even if I put this function in a try block:
> >
> >   try
> >   {
> >       gsl_root_fsolver_set (s, &f, x_lo, x_hi);
> >   }
> >   catch(...)
> >   {
> >       throw .......;   // Root is not bracked
> >   }
> >
> > Is there anyway to catch the error generated by  
> > gsl_root_fsolver_set()
> > ?  Thanks a lot.
> >
> > Jian
>
> 	What you need to do first, is rebuild the GSL library in a way that  
> allows exceptions to be thrown
> past c code. This require a certain option to be passed to gcc,  
> which is not passed by default.
> Then you need to set up an error handler function that throws an  
> exception, instead of exiting
> ------------------------------------------------------
> "Home is not where you are born, but where your heart finds peace" -
> Tommy Nordgren, "The dying old crone"
> address@hidden
        I've checked the gcc docs. The flag is -fexceptions

------------------------------------------------------
"Home is not where you are born, but where your heart finds peace" -
Tommy Nordgren, "The dying old crone"
address@hidden