Re: Gamma Function

From: N:dlzc D:aol T:com \(dlzc\) (net_at_nospam.com)
Date: 09/11/04 

Date: Fri, 10 Sep 2004 17:04:31 -0700

Dear D. Baruth:

"D. Baruth" <danb@iging.com> wrote in message
news:a15d408.0409101242.2785919c@posting.google.com...
> "Androcles" <androc1es@nospamblueyonder.co.uk> wrote in message
> news:<3s70d.4075$FF7.41141383@news-text.cableinet.net>...
...
>> | There's a real barrier between DOS and Windows:
>> | DOS is a real 16 bit operating system, Windows a 32 bit operating
>> | system running in protected mode. Windows runs DOS programs
>> | in "Virtual 8086 mode", thus capturing all direct interrupt and port
>> | accessing requests for internal processing.
>>
>> Of course. However, the algorithm I provided was written in C and
>> assembler
>> and can easily be recompiled to suit a 32-bit system.
>> It is really no different to obtaining a text file into Notepad, pasting
>> this message in and saving it, except the file isn't ASCII.
>
> You don&#8217;t understand. A Windows program cannot be run in DOS
> (or Linux),
> while DOS can be run by Windows. Theoretically, any ANSI C or FORTRAN
> code can be compiled for any operating systems and/or different CPU
> types. Assembly, on the other hand, is bound to particular hardware
> types like
> Intel x86/7 (PC) or Motorola 68x (Mac), but it can interface smoothly
> with
> any computer language.

There are "generic" assembly languages, that are not optimized to
particular architectures. One should not confuse the text, uncompiled
code, for the resultant executable. In fact, C started out to be one such
attempt. If you recall the program dBase II, it was written entirely in
assembly language.

> To transfer a whole Windows program within a DOS program to Windows is
> possible, of course, but it will make the DOS program very large.

Probably wouldn't work either, since Windows programs and DOS programs are
nothing alike in program flow and structure.

> This would
> also be a most inefficient way to spread viruses through Windows.

David A. Smith

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