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Diffstat (limited to 'share/man/man9/byteorder.9')
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diff --git a/share/man/man9/byteorder.9 b/share/man/man9/byteorder.9 new file mode 100644 index 000000000000..f47f609758d3 --- /dev/null +++ b/share/man/man9/byteorder.9 @@ -0,0 +1,169 @@ +.\" Copyright (c) 2002 Mike Barcroft <mike@FreeBSD.org> +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd April 29, 2002 +.Dt BYTEORDER 9 +.Os +.Sh NAME +.Nm bswap16 , bswap32 , bswap64 , +.Nm be16toh , be32toh , be64toh , htobe16 , htobe32 , htobe64 , +.Nm htole16 , htole32 , htole64 , le16toh , le32toh , le64toh , +.Nm be16enc , be16dec , be32enc , be32dec , be64enc , be64dec , +.Nm le16enc , le16dec , le32enc , le32dec , le64enc , le64dec +.Nd byte order operations +.Sh SYNOPSIS +.In sys/endian.h +.Ft uint16_t +.Fn bswap16 "uint16_t int16" +.Ft uint32_t +.Fn bswap32 "uint32_t int32" +.Ft uint64_t +.Fn bswap64 "uint64_t int64" +.Ft uint16_t +.Fn be16toh "uint16_t big16" +.Ft uint32_t +.Fn be32toh "uint32_t big32" +.Ft uint64_t +.Fn be64toh "uint64_t big64" +.Ft uint16_t +.Fn htobe16 "uint16_t host16" +.Ft uint32_t +.Fn htobe32 "uint32_t host32" +.Ft uint64_t +.Fn htobe64 "uint64_t host64" +.Ft uint16_t +.Fn htole16 "uint16_t host16" +.Ft uint32_t +.Fn htole32 "uint32_t host32" +.Ft uint64_t +.Fn htole64 "uint64_t host64" +.Ft uint16_t +.Fn le16toh "uint16_t little16" +.Ft uint32_t +.Fn le32toh "uint32_t little32" +.Ft uint64_t +.Fn le64toh "uint64_t little64" +.Ft uint16_t +.Fn be16dec "const void *" +.Ft uint32_t +.Fn be32dec "const void *" +.Ft uint64_t +.Fn be64dec "const void *" +.Ft uint16_t +.Fn le16dec "const void *" +.Ft uint32_t +.Fn le32dec "const void *" +.Ft uint64_t +.Fn le64dec "const void *" +.Ft void +.Fn be16enc "void *" uint16_t +.Ft void +.Fn be32enc "void *" uint32_t +.Ft void +.Fn be64enc "void *" uint64_t +.Ft void +.Fn le16enc "void *" uint16_t +.Ft void +.Fn le32enc "void *" uint32_t +.Ft void +.Fn le64enc "void *" uint64_t +.Sh DESCRIPTION +The +.Fn bswap16 , +.Fn bswap32 , +and +.Fn bswap64 +functions return a byte order swapped integer. +On big endian systems, the number is converted to little endian byte order. +On little endian systems, the number is converted to big endian byte order. +.Pp +The +.Fn be16toh , +.Fn be32toh , +and +.Fn be64toh +functions return a big endian byte ordered integer +converted to the system's native byte order. +The return value will be the same as the argument on big endian systems. +.Pp +The +.Fn le16toh , +.Fn le32toh , +and +.Fn le64toh +functions return a little endian byte ordered integer +converted to the system's native byte order. +The return value will be the same as the argument on little endian systems. +.Pp +The +.Fn htobe16 , +.Fn htobe32 , +and +.Fn htobe64 +functions return a integer in the system's native +byte order converted to big endian byte order. +The return value will be the same as the argument on big endian systems. +.Pp +The +.Fn htole16 , +.Fn htole32 , +and +.Fn htole64 +functions return a integer in the system's native +byte order converted to little endian byte order. +The return value will be the same as the argument on little endian systems. +.Pp +The +.Fn be16enc , +.Fn be16dec , +.Fn be32enc , +.Fn be32dec , +.Fn be64enc , +.Fn be64dec , +.Fn le16enc , +.Fn le16dec , +.Fn le32enc , +.Fn le32dec , +.Fn le64enc , +and +.Fn le64dec +functions encode and decode integers to/from byte strings on any alignment +in big/little endian format. +.Sh SEE ALSO +.Xr byteorder 3 +.Sh HISTORY +The +.Fn hto* +and +.Fn toh* +functions first appeared in +.Fx 5.0 , +and were originally developed by the +.Nx +project. +.Pp +The encode/decode functions first appeared in +.Fx 5.1 . |