On Wednesday 04 September 2002 6:52 am, Allan Rae wrote:
> On Tue, 3 Sep 2002, Angus Leeming wrote:
> > The setw() call above should obviously be passed the required number of
> > digits. Given the number of snippets, nsnippets, what's the elegant way
> > to get ndigits? This is clearly brain-dead:
> >
> > ndigits = 1 + int(log10(double(nsnippets)));
> >
> > but I'm obviously suffering from BSE today.
>
> int i = 0;
> while(nsnippets =>> 1) {
> ++i;
> }
> ndigits = 1 + i / 3;
>
> That is, the above is an integer approximation of :
>
> ndigits = ceiling(log2(nsnippets)/log2(10));
Thanks, Allan. I'll have to sit down and think about this. I'm totally
useless when it comes to shift operations.
> If you have a counter you're incrementing for each preview then surely
> you can output, preview1, preview2, ..., preview1984 etc. by just
> using a strstream to create the filename:
> fname << "preview" << current_snippet << ".eps";
>
> or some such?
Yes, true. I believe I went for fixed sizes to ensure that the actual gs
output filename was the same as that expected by lyx.
Of course, it may have been that I just wanted 'ls' to list them in order!
Again, I'll experiment.
Angus
