cvs commit: src/share/man/man3 Makefile src/lib/libc/alpha/gen Makefile.inc fpsetsticky.c src/lib/libc/amd64/gen Makefile.inc fpsetsticky.c src/lib/libc/powerpc/gen Makefile.inc fpsetsticky.c src/lib/libc/softfloat Makefile.inc src/lib/libc/sparc64/gen ...

[David Schultz]

das         2005-03-15 15:53:39 UTC

  FreeBSD src repository

  Modified files:
    share/man/man3       Makefile 
    lib/libc/alpha/gen   Makefile.inc 
    lib/libc/amd64/gen   Makefile.inc 
    lib/libc/powerpc/gen Makefile.inc 
    lib/libc/softfloat   Makefile.inc 
    lib/libc/sparc64/gen Makefile.inc 
    sys/amd64/include    ieeefp.h 
    sys/i386/include     ieeefp.h 
  Removed files:
    lib/libc/alpha/gen   fpsetsticky.c 
    lib/libc/amd64/gen   fpsetsticky.c 
    lib/libc/powerpc/gen fpsetsticky.c 
    lib/libc/sparc64/gen fpsetsticky.c 
  Log:
  Remove fpsetsticky().  This was added for SysV compatibility, but due
  to mistakes from day 1, it has always had semantics inconsistent with
  SVR4 and its successors.  In particular, given argument M:
  
  - On Solaris and FreeBSD/{alpha,sparc64}, it clobbers the old flags
    and *sets* the new flag word to M.  (NetBSD, too?)
  - On FreeBSD/{amd64,i386}, it *clears* the flags that are specified in M
    and leaves the remaining flags unchanged (modulo a small bug on amd64.)
  - On FreeBSD/ia64, it is not implemented.
  
  There is no way to fix fpsetsticky() to DTRT for both old FreeBSD apps
  and apps ported from other operating systems, so the best approach
  seems to be to kill the function and fix any apps that break.  I
  couldn't find any ports that use it, and any such ports would already
  be broken on FreeBSD/ia64 and Linux anyway.
  
  By the way, the routine has always been undocumented in FreeBSD,
  except for an MLINK to a manpage that doesn't describe it.  This
  manpage has stated since 5.3-RELEASE that the functions it describes
  are deprecated, so that must mean that functions that it is *supposed*
  to describe but doesn't are even *more* deprecated.  ;-)
  
  Note that fpresetsticky() has been retained on FreeBSD/i386.  As far
  as I can tell, no other operating systems or ports of FreeBSD
  implement it, so there's nothing for it to be inconsistent with.
  
  PR:             75862
  Suggested by:   bde
  
  Revision  Changes    Path
  1.16      +1 -1      src/lib/libc/alpha/gen/Makefile.inc
  1.6       +0 -62     src/lib/libc/alpha/gen/fpsetsticky.c (dead)
  1.29      +1 -1      src/lib/libc/amd64/gen/Makefile.inc
  1.2       +0 -8      src/lib/libc/amd64/gen/fpsetsticky.c (dead)
  1.8       +1 -1      src/lib/libc/powerpc/gen/Makefile.inc
  1.2       +0 -57     src/lib/libc/powerpc/gen/fpsetsticky.c (dead)
  1.2       +1 -1      src/lib/libc/softfloat/Makefile.inc
  1.12      +1 -1      src/lib/libc/sparc64/gen/Makefile.inc
  1.2       +0 -30     src/lib/libc/sparc64/gen/fpsetsticky.c (dead)
  1.35      +1 -2      src/share/man/man3/Makefile
  1.13      +0 -20     src/sys/amd64/include/ieeefp.h
  1.11      +0 -1      src/sys/i386/include/ieeefp.h