[Bug-gsl] Mistake in Documentation (section 33.4 - Providing the function to solve)

[Mark Jenkins]

I am not sure this is the correct place to report this.  Please forward 
to whoever should be notified.  Thank you.

When providing examples of "gsl_function"

>       gsl_function F;
>       struct my_f_params params = { 3.0, 2.0, 1.0 };
>
>       F.function =&my_f;
>       F.params =&params;
>
> The function f(x) can be evaluated using the following macro,
>
>       #define GSL_FN_EVAL(F,x)
>           (*((F)->function))(x,(F)->params)
Unless I am missing something, the macro is incorrect.  The variable "F" 
is of type "gsl_function", not "pointer to gsl_function" so the use of 
"(F)->function" or "(F)->params" makes no sense in this context.

It should read:
>       gsl_function F;
>       struct my_f_params params = { 3.0, 2.0, 1.0 };
>
>       F.function =&my_f;
>       F.params =&params;
>
> The function f(x) can be evaluated using the following macro,
>
>       #define GSL_FN_EVAL(F,x)
>           (*(F.function))(x,F.params)
The same mistake is made again further down in the "gsl_function_fdf" 
section.