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Bug#231313: marked as done (libc6-dev: function 'pow', not found in 'math.h'?!)



Your message dated Thu, 5 Feb 2004 13:23:54 -0800
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and subject line Bug#231313: libc6-dev: function 'pow', not found in 'math.h'?!
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From: Per Blomqvist <per.blomqvist@telia.com>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: libc6-dev: function 'pow', not found in 'math.h'?!
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Date: Thu, 05 Feb 2004 20:26:46 +0100
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Package: libc6-dev
Version: 2.3.2.ds1-11
Severity: grave
Tags: experimental
Justification: renders package unusable


Hello, Im Debian-sarge user.

function 'pow' are suppose to be in the 'math.h' according the "C
Library manual" glibc-doc.. :
file:///usr/share/doc/glibc-doc/html/libc_19.html#SEC394
(if you have it installed)

That was that. 

But there is one more thing that puzzle me is this:
Command: "dpkg -l glibc*" list:
un  glibc                       (Don't exist in my dselectlist)
un  glibc-2.3.2.ds1-11          (Don't exist in my dselect-list nether)
ii  glibc-doc   2.3.2.ds1-11    (THIS EXIST, I have it installed) GNU C Library: Documentation
un  glibc-pic                   (Don't exist in my dselectlist)
un  glibc2                      (Don't exist in my dselectlist)
un  glibcdoc                    (Don't exist in my dselectlist)

And command: "dpkg -l libc6*" list:
ii  libc6       2.3.2.ds1-11    GNU C Library: Shared libraries and Timezone data
un  libc6-bin           (Don't exist in my dselectlist)
pn  libc6-dbg
ii  libc6-dev           (this bugreport! GNU C Library: Development Libraries and Header Files)
un  libc6-doc           (Don't exist in my dselectlist)
pn  libc6-i686          
pn  libc6-pic
pn  libc6-prof
un  libc6.1             (Don't exist in my dselectlist)
un  libc6.1-dbg         (Don't exist in my dselectlist)
un  libc6.1-dev         (Don't exist in my dselectlist)
un  libc6.1-pic         (Don't exist in my dselectlist)

I have both a updated apt-list and dselectlist!

I speculate that "glibc-doc" don't document "libc6"..
( I use ftp.dk.debian.org, in my /etc/apt/sources.list file)

Any ideer whats wrong???



-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux pdebian 2.4.24-1-686 #1 Tue Jan 6 21:29:44 EST 2004 i686
Locale: LANG=sv_SE, LC_CTYPE=sv_SE

Versions of packages libc6-dev depends on:
ii  libc6                2.3.2.ds1-11        GNU C Library: Shared libraries an
ii  linux-kernel-headers 2.5.999-test7-bk-15 Linux Kernel Headers for developme

-- no debconf information


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Date: Thu, 5 Feb 2004 13:23:54 -0800
From: Jeff Bailey <jbailey@raspberryginger.com>
To: phoohb@yahoo.se
Cc: Jeff Bailey <jbailey@raspberryginger.com>, 231313-done@bugs.debian.org
Subject: Re: Bug#231313: libc6-dev: function 'pow', not found in 'math.h'?!
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Lovely.  Add -lm then to your link line.  Closing this bug.

On Thu, Feb 05, 2004 at 10:18:38PM +0100, Per Blomqvist wrote:
> Well, your example worked!
> (but I have not read the gcc manual, and don't know what options I feed..)
> 
> My first case looked like this:
> -Ehe it's to long. But the same happened if I compile your testcase with 
> only: "cc main.c"
> 
> It will output:
> [
> 	/tmp/ccywC279.o(.text+0x24): In function `main':
> 	: undefined reference to `pow'
> 	collect2: ld returned 1 exit status
> ]
> 
> Jeff Bailey wrote:
> >On Thu, Feb 05, 2004 at 08:26:46PM +0100, Per Blomqvist wrote:
> >
> >>function 'pow' are suppose to be in the 'math.h' according the "C
> >>Library manual" glibc-doc.. :
> >
> >Here's my testcase:
> >
> >$ cat main.c
> >#include <stdio.h>
> >#include <math.h>
> > 
> >int
> >main ()
> >{
> >  printf("%f\n", pow(2, 3));
> >  return(0);
> >}
> >
> >$ gcc -O2 -Wall -W main.c -lm
> >$ ./a.out
> >8.000000
> >
> >So it works for me.  Please provide a testcase showing your problem.
> >
> >Tks,
> >Jeff Bailey



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