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Re: byte specifiers
- To: Earl A. Killian <EAK at MIT-MC>
- Subject: Re: byte specifiers
- From: Guy.Steele at CMU-10A
- Date: Tue, 24 Aug 1982 03:28:00 -0000
- Cc: common-lisp at SU-AI
- In-reply-to: Earl A. Killian@MIT-MC's message of 23 Aug 82 19:13-EST
The main reason for byte specifiers is so that you can put a single
byte specifier into a variable:
(DEFCONSTANT %TCBAZ (BYTE 3 17))
... (LDB %TCBAZ X) ...
instead of having to do this:
(DEFCONSTANT %TCBAZ-SIZE 3)
(DEFCONSTANT %TCBAZ-POS 17)
... (LDB %TCBAZ-SIZE %TCBAZ-POS X) ...
--Guy