OpenEuphoria

Re: Hexadecimal numbers in Eu

• Posted by Derek Parnell <ddparnell at bigpond.com> Sep 16, 2004
• 422 views

Juergen Luethje wrote:
> 
> Hi,
> 
> in some other programming languages, hex numbers can represent positive
> or negative values. E.g. in PowerBASIC 3.2,
>    ? &hFFF0       ' prints -16
>    ? &h00F0       ' prints 240
> 
> >From what I read at 'refman_2.htm#1' (Eu 2.4), and from my experience,
> I have the impression that hexadecimal numbers (that don't have a '-'
> sign at the beginning) in Euphoria _always_ have positive values.
> 
> Rob, is this true?
> 
> In Euphoria, e.g.
> }}}
<eucode>
>    ? #FFF0       -- prints 65520
>    ? #00F0       -- prints 240
> </eucode>
{{{



Yes, hexadecimal literals are always positive unless they have a leading
minus symbol.

However it is a bit confusing because negative integers, when converted
to display as hex digits via the printf() routine, display without
the minus sign.

printf(1, "%x", -1)  --> FFFFFFFF
-- 
Derek Parnell
Melbourne, Australia