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From: earleh@eleazar.dartmouth.edu (Earle R. Horton)
Newsgroups: comp.sys.mac.programmer
Subject: Re: beauty of TMLPascal 1.0.3
Message-ID: <14298@dartvax.Dartmouth.EDU>
Date: 8 Jul 89 04:16:01 GMT
References: <2205@orion.cf.uci.edu>
Sender: news@dartvax.Dartmouth.EDU
Reply-To: earleh@eleazar.dartmouth.edu (Earle R. Horton)
Organization: Thayer School of Engineering
Lines: 46

In article <2205@orion.cf.uci.edu> ggiergiel@vmsa.cf.uci.edu writes:
>
>Version 1.0.3 of TMLPascal running under MPW 2.0.2
>generates incorrect code for the following source:
>
>Type
>complex = structure
>  r:extended;
>  i:extended;
>end;
...
>Procedure CMult(Var z:complex; Var y:complex; Var x:complex);
>Begin
>z.r:=x.r*x.r - y.i*y.i;
>z.i:=x.r*y.i + x.i*y.r;
>end;
>
>The correct code will be generated if calculation of z.r and
>z.i is split into two lines (multiply first and add later).
>Obviously I gave up on using TMLPascal. At a minimum one would want
>to see compilers to be able to add and multiply numbers correctly.
>JGiergiel GGIERGIEL@UCIVMSA.

     TML Pascal II v 3.0.2 generates proper code for the example,
except I had to use "record" instead of "structure."  It also comes
with MPW 3.0, which is superior to MPW 2.0.2.  I bought my copy new
for the paltry sum of $115, and you should be able to upgrade your
copy for less than that.  My advice is to buy the upgrade and give
TMLPascal another chance.

     It is not uncommon for compilers to generate incorrect code.
In fact, it is a fairly common thing for them to do.  I must admit,
however, that I too was disillusioned the first time I saw it happen,
and that was NOT on a Macintosh.

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     Do you have to put up with this nonsense where you work?

Earle R. Horton
"People forget how fast you did a job, but they remember how well you
did it."  Salada Tag Lines