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Article #620

Re: How to do floating point division?

#620
From: Martin Ambuhl
Date: Tue, 23 Feb 1999 00:00
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Robert Scurr wrote:

> It has been a couple of years so could be wrong, but isn't Pi difined in
> math.h???????  If so wouldn't using that be a lot simpler?

A ANSI/ISO conforming or POSIX conforming C or C++ compiler will not
contain a definition for pi.  However, many compilers will contain
definitions for use in the "default" non-standard mode.  A common form
of this definition is

#define M_PI            3.14159265358979323846  /* pi */

Which is certainly better than the various rational approximations or
calls to trig functions that have been suggested.  You can always put
this in your own code, after all.


-- 
Martin Ambuhl (mambuhl@earthlink.net)
Note: mambuhl@tiac.net will soon be inactive
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From: Martin Ambuhl <mambuhl@earthlink.net>
Subject: Re: How to do floating point division?
Date: 1999/02/23
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