Re: [ gnuplot-Patches-992149 ] String variables revisited

[Hans-Bernhard B. <br...@ph...>]

On Sun, 18 Jul 2004, Ethan A Merritt wrote:

> On Sunday 18 July 2004 07:03 am, Hans-Bernhard Broeker wrote:
> > >
> > > 1) gprintf("format",mantissa,exponent)
> > >     Is that the form it should take?
> >
> > No.  It should be gprintf("format", number).  The crucial difference
> > is that C's sprintf() supports multiple % formats and uses up exactly
> > one argument per format specifier, whereas gprintf() only ever has one
> > argument, but may use more than one format specifier with it.
> 
> Let me see if I understand this...
> 
> The user would type, for example
> 	set label gprintf("format",var)
> and internally this would be converted into a call to the existing
> function of the form
>     gprintf( (char *)temp, sizeof(temp),
> 	(char *)format,
> 	(double)current_radix,
> 	(double)var);
> followed by copying temp into the appropriate place, in this case
> the label structure.
> 
> From the user's point of view (and the parser's), gprintf always has
> exactly two parameters:  (char *)format and (double)var.

Yes.  It may be useful / necessary to allow for the logarithm base 
(current_radix), too, but we can worry about that later.

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.