Re: Bit manipulation

["Ken Garlington" <Ken.Garlington@computer.org>]

"Larry Kilgallen" <Kilgallen@eisner.decus.org.nospam> wrote in message
news:4bHjnjxVodhb@eisner.decus.org...
: In article <yjpO5.8905$pq3.719737@news.flash.net>, "Ken Garlington"
<Ken.Garlington@computer.org> writes:
: > : Ada83: for certain things like bit manipulations, you have to
: > :        use compiler-dependent libraries or interface with bits
: > :        of code in C.
: >
: > I've done huge numbers of bit manipulations in Ada83 without doing
either of
: > these options.
:
: Perhaps what you have written would not be portable to another compiler.
: Perhaps that is immaterial in your problem domain.  It is in one of mine.

So far, it's survived five compilers (TeleSoft, Tartan, Alsys, Green Hills,
Texas Instruments) and four processors (1750, 80x86, PowerPC, C67) with
little or no modifications required - see, for example:

http://www.lmaeronautics.com/news/press/jsf/jsfpr000531.html

See also the C_Coder_Test procedure I posted elsewhere in this thread, which
does (unncessary) bit masking, etc. It should work on just about any
compiler (Ada83 or Ada95), as far as I know.