Re: [BLACKBOX] CONSTant expressions

From: [at]} <Rex>
Date: Thu, 17 Jan 2008 10:24:31 -0600

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At 05:52 AM 1/17/2008, Robert Campbell wrote:
>I think that the compiler is overly strict in forbidding:
>
>CONST
> a = 1.;
> b = 1.;
> c = 2.;
> d = c / (a - b);
>
>
>In a language that supports INF why is division by 0
>SOMETIMES forbidden?
>
>(I was working out the Tangent of 90 degrees, and INF is
>a perfectly reasonable value.)

        Interesting. Mathematically, INF is not a number, and therefore not a reasonable value.

        Computationally a great convenience at times, nevertheless, although hard to use in subsequent calculations. There's a scientific dialect of Oberon, and I'd be curious what that does. I would test with Fortran, but at the moment my computer is torn apart.

Best wishes,

Rex Couture, Ph. D.
Dept. of Earth and Planetary Sciences
Campus Box 1169
Washington University in St. Louis
1 Brookings Dr.
St. Louis MO 63130

Voice: (314) 935-4194
Fax: (314) 935-7361
rex{([at]})nowhere.xy

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Received on Thu Jan 17 2008 - 17:24:31 UTC