Significant digits in a float?

[Chris Angelico]

On Wed, Apr 30, 2014 at 8:42 AM, emile <emile at fenx.com> wrote:
> On 04/29/2014 01:16 PM, Adam Funk wrote:
>
>> "A man pitches his tent, walks 1 km south, walks 1 km east, kills a
>> bear, & walks 1 km north, where he's back at his tent.  What color is
>> the bear?"  ;-)
>
>
> From how many locations on Earth can someone walk one mile south, one mile
> east, and one mile north and end up at their starting point?

Any point where the mile east takes you an exact number of times
around the globe. So, anywhere exactly one mile north of that, which
is a number of circles not far from the south pole.

ChrisA