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

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• Hash : 81018344
  Author :
  Date : 2012-03-10T12:26:57
  

  log-ieee: Work around test failure on NetBSD 5.1 and Solaris 11.
  
  * m4/log-ieee.m4: New file.
  * m4/log.m4 (gl_FUNC_LOG): If gl_FUNC_LOG_IEEE is present, test whether
  log works with a negative argument. Replace it if not.
  * lib/log.c (log): For negative arguments, return NaN.
  * modules/log-ieee (Files): Add m4/log-ieee.m4.
  (configure.ac): Invoke gl_FUNC_LOG_IEEE.
  * doc/posix-functions/log.texi: Mention the log-ieee module.
  

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• doc/posix-functions/log.texi

• @node log
  @section @code{log}
  @findex log
  
  POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/log.html}
  
  Gnulib module: log or log-ieee
  
  Portability problems fixed by either Gnulib module @code{log} or @code{log-ieee}:
  @itemize
  @item
  This function returns a wrong value for a minus zero argument on some platforms:
  OSF/1 5.1.
  @end itemize
  
  Portability problems fixed by Gnulib module @code{log-ieee}:
  @itemize
  @item
  This function returns a wrong value for a negative argument on some platforms:
  NetBSD 5.1, Solaris 11 2011-11.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @end itemize
  

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