integral to floating point conversion
MakersF via Digitalmars-d
digitalmars-d at puremagic.com
Sat Jul 2 14:17:21 PDT 2016
On Saturday, 2 July 2016 at 20:49:27 UTC, Andrei Alexandrescu
wrote:
> On 7/2/16 4:30 PM, Walter Bright wrote:
>> On 7/2/2016 1:17 PM, Andrei Alexandrescu wrote:
>>> So what's the fastest way to figure that an integral is
>>> convertible to a
>>> floating point value precisely (i.e. no other integral
>>> converts to the
>>> same
>>> floating point value)? Thanks! -- Andrei
>>
>> Test that its absolute value is <= the largest unsigned value
>> represented by the float's mantissa bits.
>
> What is the largest unsigned value represented by the float's
> mantissa bits? I recall there is a constant somewhere for it.
> -- Andrei
Isn't it 2^24-1?
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