Re: How to put 200 into an integer sub-type of 16 bits (code included)

[Adam Beneschan <adam@irvine.com>]

On Jan 14, 12:13 pm, ChristopherL <clusard...@aol.com> wrote:

> I want to copy bits from an Ada float to a user defined short integer
> maintaining the same
> bit representation.

OK, why?  Depending on your hardware, a float is likely 32 or 64 bits,
maybe 80.  I've occasionally seen different sizes, but I don't recall
ever seeing a 16-bit float, and definitely not an 8-bit float.

Your short integer is an 8-bit integer.  (If you want it to be a 16-
bit integer, why would you give it a range of -128 .. 127, rather than
-32768 .. 32767?)

OK, assuming that want to copy bits from an "Ada float", which is
actually a hardware float supported by your processor and has nothing
to do with your programming language, to a short integer: You want to
copy bits from a 32-bit float, perhaps, to an 8-bit integer.  Which
bits do you want to copy?  The ones containing the exponent or part of
it, or the low-order mantissa bits, or some other sequence of bits?
Why don't you want to copy the other 24 bits?

If you have no idea what I'm talking about, then you have certainly
stated your problem incorrectly, and you need to rethink your problem
and restate what you want to accomplish, at a high level, without
referring to "bits".  Actually, I already suspect that you don't want
what you said you want (copying bits from a float), because if you
really did want to copy bits from a floating-point representation, you
wouldn't be concerned with rounding.

                                -- Adam