Bug#244610: marked as done (libc6-dev: No header file declares log2l().)
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and subject line Bug#244610: libc6-dev: No header file declares log2l().
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From: Ryutaroh MATSUMOTO <ryutaroh@it.ss.titech.ac.jp>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: libc6-dev: No header file declares log2l().
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Package: libc6-dev
Version: 2.3.2.ds1-11
Severity: normal
Tha man page log2l(3) says that log2l() is declared when we include
<math.h>. But no header file declares log2l().
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.3-1-686
Locale: LANG=C, LC_CTYPE=ja_JP.EUC-JP
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: Wed, 21 Apr 2004 16:09:47 +0900
Message-ID: <81pta1dcxw.wl@omega.webmasters.gr.jp>
From: GOTO Masanori <gotom@debian.or.jp>
To: ryutaroh@it.ss.titech.ac.jp, 244610-done@bugs.debian.org
Cc: gotom@debian.or.jp
Subject: Re: Bug#244610: libc6-dev: No header file declares log2l().
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At Wed, 21 Apr 2004 02:17:01 +0100,
ryutaroh@it.ss.titech.ac.jp wrote:
> > Read /usr/include/bits/mathcalls.h.
>
> Have you compiled a sample code with log2l() and <math.h>
> and checked whether a warning was displayed? I doubt it.
>
> Could you compile the following code with "gcc -Wall"?
>
> #include <math.h>
>
> int main(void)
> {
> long double a=0.1;
> return (int) log2l(a);
> }
>
> I got the following warning, which should not happen according
> to the manual page.
$ man log2
CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899. The float and the long double variants
are C99 requirements.
> sh-2.05b$ gcc -Wall log2l.c -lm
-std=c99
Regards,
-- gotom
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