From: stt@ada-uts
Subject: Re: Rep Specs - Need user input
Date: 22 Sep 88 14:58:00 GMT [thread overview]
Message-ID: <57900080@ada-uts> (raw)
In-Reply-To: 1291@augusta.UUCP
Here is a general comment: given that the hardware provides
shift and mask instructions, there seems no reason why bit-field
assignments/fetches need be out-of-line. C-compilers have
been doing this kind of bit-field manipulations in-line
since 1976 or before. Take a look at the
Gould C compiler, or others, and I am sure you will see reasonable
code for such bit-field operations. I'm sure Jovial, etc. do the same.
(Concatenating unaligned slices of packed bit arrays is another
matter, of course ...)
Tucker Taft
Intermetrics, Inc.
Cambridge, Mass 02138
prev parent reply other threads:[~1988-09-22 14:58 UTC|newest]
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1988-09-19 19:30 Rep Specs - Need user input Burch Seymour
1988-09-22 14:58 ` stt [this message]
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