BOUNCE rtl@rtlinux.org: Approval required: Non-member submissionfrom [Jan Albiez <albiez@fzi.de>] (fwd)

[Der Herr Hofrat <der.herr@hofr.at>]

>From owner-rtl Mon May 21 09:06:36 2001
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Date: Mon, 21 May 2001 17:01:46 +0200
To: RT Linux Mailinglist <rtl@rtlinux.org>
Subject: Using libm in rt-space
Message-ID: <20010521170146.A6442@audi.fzi.de>
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From: Jan Albiez <albiez@fzi.de>

Hoi !

I try to use some mathematical function inside a rt-thread. At the begining
this didn't seemed to be a problem. I linked the libm.a (part of glibc)
statically to my rt-module and everything was fine. The functions used until
this point had been the sine and the cosine functions.

The problemarised the moment i used asin the first time. Somehow the
designers of glibc have decided that some of the functions should make use
of the classical standard error output via fputs and stderr. These symbols
are (naturally) not available in rt-context. At the moment I just have
defined myself a workaround of the form:

int fputs(void) {
	return 1;
}

int stderr;

which so far satisfies the linker, and works as far as i can see. But i
don't think this is clean. Has anybody a better solution ?

blue skies
	Jan
-- 
-- Jan Christian Albiez --    
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