[Coco] OS9 HEX to DECIMAL conversion.

[Wayne Campbell]

The first problem you're going to run into is that the maximum integer
value you can have in Basic09 is 32767. There are no unsigned integers. You
can use REAL numbers to get integer values >32767, but it there may be a
trailing fraction (such as .00000001 or something like that) that you will
have to deal with. Basic09 has a way of dealing with her values, but again
it is limited to the maximum value of FFFF or -1 unsigned. It is the $
character preceding the value (such as $A9C4). I don't know of any routine
for handling large integers in Basic09.


On Wed, May 16, 2018, 5:05 AM <coco at jechar.ca> wrote:

>
> I am only interested in INTEGER calculations.
>
> Print Using might be ok for output but It does not help me
> convert a HEX input to DECIMAL.
>
>   INTEGER for all intents and purposes is the same as DECIMAL.
>
>   So I am looking for a "String that is a representation of a
>   HEX Number to INTEGER version and maybe the inverse though
>   maybe PRINT USING will suffice for the output ig it can
>   handel large numbers like 400,000+
>
> On 2018-05-16 07:18, James Jones wrote:
> > As Bob points out, PRINT USING will let you display a value in
> > hexadecimal.
> > For input, you'll have to write code to do the conversion.
> >
> > One thing that's important to keep straight: there are languages that
> > have
> > a decimal numeric format, most notably COBOL, and some computers have
> > an
> > internal decimal numeric format, BCD, with four bits for each decimal
> > digit, to support such languages. However, BASIC09's numeric types,
> > BYTE,
> > INTEGER, and REAL, are binary. The code you write to convert a string
> > of
> > hex digits will convert that string to an INTEGER or a REAL, not to
> > decimal, to allow the calculations you want to perform. To see this,
> > try
> > this code:
> >
> > DIM sum:REAL
> > DIM i:INTEGER
> >
> > FOR i:=1 TO 100
> >   sum:=sum+0.1
> > NEXT i
> >
> > PRINT sum
> >
> > (Back when BASIC09 was new, I wasn't familiar enough with Chinese food
> > to
> > chuckle at "DIM sum"...)
> >
> > On Tue, May 15, 2018 at 6:24 PM, <coco at jechar.ca> wrote:
> >
> >>
> >>
> >>  Does anyone know of a routine to turn hex to decimal
> >>  or decimal to hex in Basic09.
> >>
> >>  I would like to take a Hex # as input convert it to decimal
> >>  do some calculations and then convert it back to hex for
> >>  display.
> >>
> >>  Charles
> >>
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> >>
>
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