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

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• Hash : 38489e5c
  Author :
  Date : 2023-04-18T13:24:42
  

  ilogbl: Work around a Cygwin 3.4.6 bug.
  
  * m4/ilogbl.m4 (gl_FUNC_ILOGBL_WORKS): Also test the value of
  ilogbl(NaN).
  * doc/posix-functions/ilogbl.texi: Mention the new Cygwin bug.
  

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• doc/posix-functions/ilogbl.texi

• @node ilogbl
  @section @code{ilogbl}
  @findex ilogbl
  
  POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/ilogbl.html}
  
  Gnulib module: ilogbl
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function is missing on some platforms:
  FreeBSD 5.2.1, NetBSD 7.1, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 9, Cygwin 1.7.x, MSVC 9.
  @item
  This function returns a wrong result for a zero argument on some platforms:
  @c https://cygwin.com/ml/cygwin/2019-12/msg00074.html
  Cygwin 2.9.
  @item
  This function returns a wrong result for a NaN argument on some platforms:
  @c https://cygwin.com/pipermail/cygwin/2023-April/253511.html
  Cygwin 3.4.6.
  @item
  This function returns a wrong result for denormalized arguments on some platforms:
  AIX 7.1 64-bit, Haiku 2017.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @end itemize
  

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