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From: PEPRBV%CFAAMP.BITNET@wiscvm.wisc.edu
Newsgroups: comp.lang.c
Subject: floating point ==
Message-ID: <6639@brl-adm.ARPA>
Date: Wed, 1-Apr-87 11:59:47 EST
Article-I.D.: brl-adm.6639
Posted: Wed Apr  1 11:59:47 1987
Date-Received: Sat, 4-Apr-87 07:20:14 EST
Sender: news@brl-adm.ARPA
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Vincent Manis <manis%ubc-cs.uucp@BRL.ARPA> writes about an old Univac
Fortran compiler:
  >>This compiler would generate a warning when you compared
  >>floating point numbers for equality (or non-equality).
and suggests that C compilers could do the same thing.

I used the same compiler, and the option to turn off this warning
was only added when users complained about it.  It's a good idea
to have such an option, but in some environments you need to be
able to turn it off so that other error messages don't get lost
in the midst of ignorable warnings.  I also don't think that any
optional warning a compiler can produce should be considered a
violation of the standard.