Since we're talking about number formatting

I want to print a bunch of stuff to 2 significant figures (more generally to any fixed number of them).

So I want

0 -> 0.00  and not 0 or 0.0
1.1 -> 1.10 and not 1.1
9 -> 9.00 same rules
10 -> 10.0
100 -> 100 (no point)
999 -> 999
1000 -> 1.00e3

Is there any standard format incantation which does this?

In fact I already have to deal with the large-magnitude case as what I actually want is 1.00\times 10^{3} for instance so it's only the small-magnitude case I need to deal with.

--tim

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