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From: Pietro Gagliardi <pietro10@mac.com>
Subject: Re: [9fans] Problems with pcc
Date: Sun, 18 Nov 2007 21:18:04 -0500
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Topicbox-Message-UUID: 009587c0-ead3-11e9-9d60-3106f5b1d025

On Nov 12, 2007, at 9:17 AM, Charles Forsyth wrote:

> i've put an updated copy on sources in contrib/forsyth/hocplus.tgz .
> just diff against the original to see the small changes (including  
> mkfile).
>
> ape doesn't provide gamma or cbrt, but if they're in c99 i suppose  
> it could.
>
double cbrt(double x) { return pow(x, 1.0 / 3.0); }

APE does provide the log of gamma: /sys/src/ape/lib/ap/math/gamma.c.  
The function is not referenced in any header file, and is called gamma 
(). I changed its name to logofgamma and defined gamma as gammafunc  
(to avoid name collisions with C99 compilers):

	double gammafunc(double x)
	{
		double y;

		y = exp(logofgamma(x));
		return y * signgam; /* a global variable declared in the gamma.c */
	}