Re: Modify value - type duration

["Randy Brukardt" <randy@rrsoftware.com>]

"Jeffrey R. Carter" <spam.jrcarter.not@spam.acm.org> wrote in message 
news:nasQk.422242$yE1.14213@attbi_s21...
> Adam Beneschan wrote:
>>
>> Hmmm ... now I wonder why there isn't a Truncation attribute for fixed-
>> point types?  Maybe nobody before Andreas ever thought they'd need
>> one.  Might be useful.  (Also Floor, Ceiling.)
>
> No, I wondered about that long ago.
>
>> A possible problem with the floating-point conversion solution is that
>> there may be cases where you lose accuracy---if, e.g., the largest
>> floating-point type and fixed-point systems supported on the machine
>> are both 64 bits.  Since a floating-point number needs room for an
>> exponent, it's possible to define a fixed-point type with more bits in
>> the integer part than can be represented in the mantissa of a floating-
>> point type, e.g.
>
> One must always be careful in such cases that the conversion will not fail 
> or lose important bits.

Right, in both cases. Sounds like someone should propose something on 
Ada-Comment. (This seems like the sort of small cleanup that could be added 
to the next Amendment.)

                            Randy.