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From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Is ther any sense in *= and matrices?
References: <bebbba07.0306081051.5f3ac24b@posting.google.com>
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>Oh, really? I just did a test in C++ with 3x3 matrices. I added them
>together 10,000,000 times using "+", then "+=". The "+=" version took
>about 19 seconds, and the "+" version took about 55 seconds. That's
  Would you be so kind as to post your code, and what C++ compiler
and what hardware you used?  Your results seem quite different from
other people's.  My old 900MHz Windows 2K machine using MSVC++ 5.0
took 4.38 and 3.28 seconds, a factor of 1.33, and using Gnat 3.15p
on the same machine took 1.38 and 0.85 seconds, a ratio of 1.6
Clearly, there's something substantially different between our
compilers/hardware/code.