Re: Converting integer + mantissa to float

On Wed, Jun 11, 2008 at 2:19 PM, Rob Dixon <[email protected]> wrote:
> Jay Savage wrote:
>>
>> I'm having trouble wrapping my brain around this:
>>
>> I am writing a script that will receive two integers as input that
>> represent a single float. The first is the integer part, the second is
>> hat mantissa. How do I recomine them into a single float? all I'm
>> coming up with so far is:
>>
>> my $float = $int_part . '.' . $matissa; #or
>> my $float = sprintf "%u.%u", $int_part, $mantissa;
>>
>> It seems, though, like there should be a more elegant way to handle
>> this than turning two numbers into a string to turn around and use the
>> result as  number again. What am I missing?
>
> Hi Jay
>
> I don't think you're missing anything. I would write
>
>  my $float = "$int_part.$mantissa";
>
> which is the same as your first solution, but a little more concise.
>
> I think this is very elegant indeed; please tell me about your misgivings?
>
> Rob
>
>
>

Thanks Rob,

My misgivings revolved around using string concatenation to create
numbers. Not misgivings, really. just the suspicion that there should
be a way to handle numbers as numbers from start to finish--e.g.,
something roughly the opposite of POSIX::frexp()--and the nagging
feeling that I'd missed something obvious.

--j
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