Re: Preferred order of evaluation

ok@cs.rmit.edu.au (Richard A. O'Keefe)
15 Sep 1996 00:17:27 -0400

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Re: Preferred order of evaluation dlmoore@ix.netcom.com (David L Moore) (1996-09-07)
Re: Preferred order of evaluation ok@cs.rmit.edu.au (1996-09-15)
Re: Preferred order of evaluation dmoen@mks.com (1996-09-15)
Re: Preferred order of evaluation gbcacm@ccs.neu.edu (1996-09-15)
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From: ok@cs.rmit.edu.au (Richard A. O'Keefe)
Newsgroups: comp.compilers
Date: 15 Sep 1996 00:17:27 -0400
Organization: Comp Sci, RMIT, Melbourne, Australia
References: 96-09-021 96-09-042
Keywords: design

Jerry Leichter <leichter@smarts.com> writes:


>Traditional mathematical notation uses left-to-right evaluation for
>operators of equal precedence. (It also only defines 3 or so levels of
>precedence - addition, multiplication, exponentation, maybe unary
>operators.)


You forgot that "<", "=", ">", and so on are _also_ "traditional
mathematical notation", constituting a fourth level. "And" and "or" are
there too. Plus a ton of other things, like outfix operators
(integral ... dx) and operators with wide right scope and narrow left
scope (sum).


--
Richard A. O'Keefe; http://www.cs.rmit.edu.au/%7Eok; RMIT Comp.Sci.
--

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