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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: standard error codes
Date: Tue, 10 Jan 2017 13:03:21 -0800
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Malcolm McLean <malcolm.mclean5@btinternet.com> writes:
> On Tuesday, January 10, 2017 at 8:01:26 PM UTC, Keith Thompson wrote:
>> 
>> The question remains, is it significantly more efficient to return
>> a zero/nonzero result than a negative/zero/positive result?
>> 
> C++ std::sort is built on a < operator which returns true if a < b, and
> has to be called a bit clumsily if(!(a < b) && !( b <a)) for equality.
> That gives it a slight benefit over qsort which insists on a three-way
> comparison.

What "slight benefit" are you referring to?  If you mean there's a
performance improvement, do you have measurements?

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"