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));
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?
Allan. (ARRae)
