Date: Fri, 04 Apr 2003 16:08:23 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: ru@FreeBSD.org Cc: mike@FreeBSD.org Subject: Re: cvs commit: src/sys/sys endian.h src/share/man/man9 byteorder.9 Message-ID: <20030404.160823.91026001.imp@bsdimp.com> In-Reply-To: <20030404085200.GA1765@sunbay.com> References: <Pine.BSF.4.21.0304031545540.15187-100000@root.org> <20030403184229.D18209@espresso.bsdmike.org> <20030404085200.GA1765@sunbay.com>
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In message: <20030404085200.GA1765@sunbay.com>
Ruslan Ermilov <ru@FreeBSD.org> writes:
: +#define BSWAP64(x) (uint64_t) \
: + (((x) >> 56) | (((x) >> 40) & 0xff00) | (((x) >> 24) & 0xff0000) | \
: + (((x) >> 8) & 0xff000000) | (((x) << 8) & ((uint64_t)0xff << 32)) | \
: + (((x) << 24) & ((uint64_t)0xff << 40)) | \
: + (((x) << 40) & ((uint64_t)0xff << 48)) | (((x) << 56)))
0xffull or 0xffULL might be better than the casts here. This does
assume that 0ull == (uint64_t)0, which does hold for all our
architectures...
Warner
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