Two questions about "%a"

[Magnus Lie Hetland]

On 2011-03-04 03:16:50 +0100, Nick Sabalausky said:

> I'm no floating-point expert, but I would think that the only way to 
> get an exact representation would be to output the raw data in hex (or 
> binary, or octal, etc):
> 
> writef("0x%X", cast(ulong)1.2);

That's also an option, certainly. Then I could just write it as a 
decimal integer, I guess.

But the point of hex-literals for floats is precicely that they can 
represent floats exactly (even though it may not *look* like it, as in 
this case, because lots of digits are required to approximate the 
decimal value 1.2). So using those shold be safe -- and perhaps more 
easily read on other platforms, for example (byte order), or into 
floats with other precisions or the like.

Thanks for the suggestion, though :)

-- 
Magnus Lie Hetland
http://hetland.org