BZ#13926: Add __bswap_64 for non-GCC compilers

[Andreas Jaeger]

Thanks for all the comments on how to improve my last patch.

IMHO this is the best approach to change the code - make it available 
with __GLIBC_HAVE_LONG_LONG only. GCC will never see this code since 
there it is specially handled before.

Ok to commit once testing on both x86 and x86-64 passes?

Andreas

2012-04-02  Andreas Jaeger  <aj@suse.de>

	[BZ #13926]
	* sysdeps/i386/bits/byteswap.h [!__GNUC__](__bswap_constant_64):
	New macro for this case.
	[!__GNUC__] (__bswap_64): New inline function for this case.
	* sysdeps/x86_64/bits/byteswap.h: Likewise.
	* bits/byteswap.h: Likewise.
	* sysdeps/s390/bits/byteswap.h: [!__GNUC__] (__bswap_64): Use
	ull, guard with __GLIBC_HAVE_LONG_LONG.

	* string/endian.h (htobe64,htole64,be64toh,le64toh): Guard with
	__GLIBC_HAVE_LONG_LONG.

	* string/byteswap.h (bswap_64): Guard with
	__GLIBC_HAVE_LONG_LONG.
	Include <features.h> for __GLIBC_HAVE_LONG_LONG.


-- 
  Andreas Jaeger aj@{suse.com,opensuse.org} Twitter/Identica: jaegerandi
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