Path: utzoo!attcan!uunet!steinmetz!davidsen
From: davidsen@steinmetz.ge.com (William E. Davidsen Jr)
Newsgroups: comp.sys.intel
Subject: Re: Using short ints
Keywords: 80386 int
Message-ID: <12937@steinmetz.ge.com>
Date: 12 Jan 89 14:17:49 GMT
References: <13@rsoft.UUCP>
Reply-To: davidsen@crdos1.UUCP (bill davidsen)
Organization: General Electric CRD, Schenectady, NY
Lines: 24

Here's some info from my benchmarks file. It indicates that the use of
shorts might buy you a few percent, but I wouldn't write any code using
it. This doesn't show converting the short to int every time it's used
as a subscript, passed as an argument, or used in a calculation.

I'd save short for places where you need to save space...
________________________________________________________________

System id: GV386+287, 1MB 16MHz+cache

Optimized math results:

Math operations, effective instructions/sec (thousands)

               Add     Sub     Mpy     Div    Wtd. Avg.
short:      1973.7  1973.7   843.4   493.8    1469.1
long:       1973.7  1948.1   789.5   329.7    1423.4
float:        45.2    44.4    39.8    22.5      40.2
double:       41.5    41.0    28.2    21.6      35.0
int:        1975.3  1948.1   789.5   329.7    1423.8
-- 
	bill davidsen		(wedu@ge-crd.arpa)
  {uunet | philabs}!steinmetz!crdos1!davidsen
"Stupidity, like virtue, is its own reward" -me