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

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• Hash : 9b144e90
  Author :
  Date : 2010-12-21T18:55:59
  

  New module 'round-ieee'.
  
  * modules/round-ieee: New file.
  * m4/round.m4 (gl_FUNC_ROUND): If gl_FUNC_ROUND_IEEE is also used, test
  whether round works according to ISO C 99 with IEC 60559.
  * m4/round-ieee.m4: New file.
  * modules/round-ieee-tests: New file.
  * tests/test-round-ieee.c: New file, based on tests/test-roundf-ieee.c.
  * tests/test-round1.c (main): Remove signbit tests.
  * modules/round-tests (Depends-on): Remove 'signbit'.
  * doc/posix-functions/round.texi: Mention the new module.
  

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• doc/posix-functions/round.texi

• @node round
  @section @code{round}
  @findex round
  
  POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/round.html}
  
  Gnulib module: round or round-ieee
  
  Portability problems fixed by either Gnulib module @code{round} or @code{round-ieee}:
  @itemize
  @item
  This function is missing on some platforms:
  FreeBSD 5.2.1, OpenBSD 3.8, AIX 5.1, IRIX 6.5, OSF/1 4.0, Solaris 9, Interix 3.5.
  @item
  This function is not declared on some platforms:
  glibc 2.8, OSF/1 5.1.
  @item
  This functions returns a wrong result for x = 1/2 - 2^-54 on some platforms:
  NetBSD 3.0, AIX 7.1.
  @end itemize
  
  Portability problems fixed by Gnulib module @code{round-ieee}:
  @itemize
  @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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