[Bug math/5753] New: ieee754.h: wrong check __FLOAT_WORD_ORDER

[Bug math/5753] New: ieee754.h: wrong check __FLOAT_WORD_ORDER

[aurelien at aurel32 dot net]

In /usr/include/ieee754.h you can find the following check:

# if    __FLOAT_WORD_ORDER == BIG_ENDIAN

However bits/endian.h defines __BIG_ENDIAN, not BIG_ENDIAN.

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           Summary: ieee754.h: wrong check __FLOAT_WORD_ORDER
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
        AssignedTo: aj at suse dot de
        ReportedBy: aurelien at aurel32 dot net
                CC: glibc-bugs at sources dot redhat dot com
 GCC build triplet: armv5tejl-unknown-linux-gnu
  GCC host triplet: armv5tejl-unknown-linux-gnu
GCC target triplet: armv5tejl-unknown-linux-gnu


http://sourceware.org/bugzilla/show_bug.cgi?id=5753

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[Bug math/5753] ieee754.h: wrong check __FLOAT_WORD_ORDER

[aurelien at aurel32 dot net]

------- Additional Comments From aurelien at aurel32 dot net  2008-02-10 19:18 -------
Created an attachment (id=2243)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=2243&action=view)
Patch to fix the problem.


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[Bug math/5753] ieee754.h: wrong check __FLOAT_WORD_ORDER

[aj at suse dot de]

------- Additional Comments From aj at suse dot de  2008-03-09 12:45 -------
This should not be a problem at all.  The header <endian.h> defines:

#ifdef  __USE_BSD
# define LITTLE_ENDIAN  __LITTLE_ENDIAN
# define BIG_ENDIAN     __BIG_ENDIAN
# define PDP_ENDIAN     __PDP_ENDIAN
# define BYTE_ORDER     __BYTE_ORDER
#endif

Nevertheless, it might be cleaner to do as you propose.

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[Bug math/5753] ieee754.h: wrong check __FLOAT_WORD_ORDER

[aurelien at aurel32 dot net]

------- Additional Comments From aurelien at aurel32 dot net  2008-03-09 13:21 -------
The bug is not present when __USE_BSD is used, that is by default. When you 
start to use some options like -ansi, it is not defined anymore, and the 
problem appears.

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[Bug math/5753] ieee754.h: wrong check __FLOAT_WORD_ORDER

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2008-03-10 06:21 -------
Subject: Bug 5753

CVSROOT:	/cvs/glibc
Module name:	ports
Changes by:	aj@sourceware.org	2008-03-10 06:20:30

Modified files:
	.              : ChangeLog.mips 
	sysdeps/mips   : ieee754.h 

Log message:
	[BZ #5753]
	* sysdeps/mips/ieee754.h: Use protected namespace
	__BIG_ENDIAN/__LITTLE_ENDIAN.
	Patch by Aurelien Jarno <aurelien@aurel32.net>.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/ports/ChangeLog.mips.diff?cvsroot=glibc&r1=1.48&r2=1.49
http://sourceware.org/cgi-bin/cvsweb.cgi/ports/sysdeps/mips/ieee754.h.diff?cvsroot=glibc&r1=1.2&r2=1.3



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[Bug math/5753] ieee754.h: wrong check __FLOAT_WORD_ORDER

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2008-03-10 06:22 -------
Subject: Bug 5753

CVSROOT:	/cvs/glibc
Module name:	libc
Changes by:	aj@sourceware.org	2008-03-10 06:21:22

Modified files:
	sysdeps/ia64   : ieee754.h 
	sysdeps/ieee754: ieee754.h 

Log message:
	[BZ #5753]
	* sysdeps/ia64/ieee754.h: Use protected namespace
	__BIG_ENDIAN/__LITTLE_ENDIAN.
	* sysdeps/ieee754/ieee754.h: Likewise.
	Patch by Aurelien Jarno <aurelien@aurel32.net>.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/sysdeps/ia64/ieee754.h.diff?cvsroot=glibc&r1=1.2&r2=1.3
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/sysdeps/ieee754/ieee754.h.diff?cvsroot=glibc&r1=1.12&r2=1.13



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[Bug math/5753] ieee754.h: wrong check __FLOAT_WORD_ORDER

[aj at suse dot de]

------- Additional Comments From aj at suse dot de  2008-03-10 06:22 -------
Fixed in glibc cvs HEAD.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://sourceware.org/bugzilla/show_bug.cgi?id=5753

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[Bug math/5753] ieee754.h: wrong check __FLOAT_WORD_ORDER

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=5753

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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