std.math.TAU

[James Fisher]

On Tue, Jul 5, 2011 at 12:15 PM, Steven Schveighoffer
<schveiguy at yahoo.com>wrote:
>
> I read an article about this recently, it's definitely interesting.  The
> one place where I haven't seen it mentioned is what happens when you want
> the area of a circle, since that necessarily involves the radius.  I'd guess
> you'd have to use τ/2 * r^2, but even then, that's one formula vs. the rest.
>  It's probably a good tradeoff.  I can definitely see the advantage when
> using radians.  Never thought I'd have to re-learn trig again...
>

It embarasses me to say that, after many years, working with radians and pi
still makes my head hurt.  "So I have to multiply -- no wait, divide -- no
wait, multiply that by 2 ..."
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