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Date: Sun, 15 Jun 2008 10:25:52 -0400
From: CBFalconer <cbfalconer AT yahoo DOT com>
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Subject: Re: Define of PI in math.h
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Andris Pavenis wrote:
> 
> Is there any special reason why DJGPP math.h defines macro PI?
> 
> One must have macro M_PI according to C standard AFAIK. Having
> also PI breaks compilation of at least one package (I tried gpstk)

I believe those (PI and M_PI) are only required for POSIX.  For
standard C (use -ansi -pedantic) neither should be defined.

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