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

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• Hash : 89f85637
  Author :
  Date : 2012-03-08T01:55:40
  

  roundf: Don't override undeclared system function on IRIX 6.5.
  
  * m4/roundf.m4 (gl_FUNC_ROUNDF): Search for roundf() in the libraries
  also when it is not declared. Set HAVE_ROUNDF. For replacement code,
  test HAVE_ROUNDF, not HAVE_DECL_ROUNDF.
  * modules/roundf (configure.ac): For replacement code, test
  HAVE_ROUNDF, not HAVE_DECL_ROUNDF.
  (Depends-on): Update conditions.
  * modules/roundf-ieee (Depends-on): Update conditions.
  * doc/posix-functions/roundf.texi: Mention the IRIX problem.
  

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• doc/posix-functions/roundf.texi

• @node roundf
  @section @code{roundf}
  @findex roundf
  
  POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/roundf.html}
  
  Gnulib module: roundf or roundf-ieee
  
  Portability problems fixed by either Gnulib module @code{roundf} or @code{roundf-ieee}:
  @itemize
  @item
  This function is missing on some platforms:
  FreeBSD 5.2.1, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, older IRIX 6.5, OSF/1 4.0, Solaris 9, MSVC 9, Interix 3.5.
  @item
  This function is not declared on some platforms:
  glibc 2.8, IRIX 6.5, OSF/1 5.1.
  @item
  This functions returns a wrong result for x = 1/2 - 2^-25 on some platforms:
  mingw.
  @end itemize
  
  Portability problems fixed by Gnulib module @code{roundf-ieee}:
  @itemize
  @item
  This function returns a positive zero for an argument between -0.5 and 0
  on some platforms:
  AIX 7.1, OSF/1 5.1.
  @item
  This function returns a positive zero for a minus zero argument
  on some platforms:
  OSF/1 5.1.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  @itemize
  @end itemize
  

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