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view doc/posix-functions/log2f.texi @ 40139:3bacbf659cc9
ttyname_r: Work around bug on Android 4.3.
* m4/ttyname_r.m4 (gl_FUNC_TTYNAME_R): Test whether ttyname_r is a stub.
* lib/ttyname_r.c (ttyname_r): Implement for Android.
* doc/posix-functions/ttyname_r.texi: Mention the Android bug.
* doc/posix-functions/ttyname.texi: Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 26 Jan 2019 11:56:31 +0100 |
parents | 0f6b0bb3cee9 |
children |
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@node log2f @section @code{log2f} @findex log2f POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/log2f.html} Gnulib module: log2f or log2f-ieee Portability problems fixed by either Gnulib module @code{log2f} or @code{log2f-ieee}: @itemize @item This function is missing on some platforms: FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, older IRIX 6.5, Solaris 9, MSVC 9, Interix 3.5, Android 4.2. @item This function is not declared on some platforms: IRIX 6.5. @item This function is only provided as a macro on some platforms: Cygwin 1.5.x. @item This function returns a wrong value for a minus zero argument on some platforms: OSF/1 5.1. @item This function returns slightly wrong values for exact powers of 2 on some platforms: Cygwin 1.7.9. @end itemize Portability problems fixed by Gnulib module @code{log2f-ieee}: @itemize @item This function returns a wrong value for a negative argument on some platforms: NetBSD 5.1, Solaris 10/x86_64. @end itemize Portability problems not fixed by Gnulib: @itemize @end itemize