kc3-lang/gnulib/doc/posix-functions/log2.texi

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  Date : 2018-05-13T13:44:57
  

  doc: Add info about Android versions 2.0 to 8.1.
  
  * doc/**/*.texi: Add info about functions in all released versions of
  Bionic.
  

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• doc/posix-functions/log2.texi

• @node log2
  @section @code{log2}
  @findex log2
  
  POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/log2.html}
  
  Gnulib module: log2 or log2-ieee
  
  Portability problems fixed by either Gnulib module @code{log2} or @code{log2-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{log2-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
  

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