Re: [Boost-testing] serialization - NaN, +/Inf and others

From: Kevin Wheatley (hxpro_at_[hidden])
Date: 2005-11-17 12:07:52

Robert Ramey wrote:
> BUT - I can't find any "official" to initialize a float/double to any of
> these
> values.  They seem to be the result of operations and its certainly
> not obvious that all compilers would be on the same page here.
> 
> Note that this same problem arises whenever a float/double is written/read
> to/from a stream in a way designed to be portable.  So it must have come
> up before.  What's the solution here?

don't know of a great solution but under IEEE class floats can't you
compute the numbers...

NaN = 0/0
+inf = +1/0
-inf = -1/0
+0 = 0/+1
-0 = 0/-1
etc.

A big hack of a cheat for sure :-)

Kevin

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| Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this      |
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