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.TH MACH-SWAP 3
.SH NAME
beswap2, beswap4, beswap8, beieeeftoa32, beieeeftoa64, beieeeftoa80,
beload2, beload4, beload8,
leswap2, leswap4, leswap8, leieeeftoa32, leieeeftoa64, leieeeftoa80,
leload2, leload4, leload8, ieeeftoa32, ieeeftoa64 \- machine-independent access to byte-ordered data
.SH SYNOPSIS
.B #include <u.h>
.br
.B #include <libc.h>
.br
.B #include <mach.h>
.PP
.ta \w'\fBu64intxx'u
.B
u16int beswap2(u16int u)
.br
u32int beswap4(u32int u)
.br
u64int beswap8(u64int u)
.PP
.B
int beieeeftoa32(char *a, uint n, void *f)
.br
int beieeeftoa64(char *a, uint n, void *f)
.br
int beieeeftoa80(char *a, uint n, void *f)
.PP
.B
u16int beload2(uchar *p)
.br
u32int beload4(uchar *p)
.br
u64int beload8(uchar *p)
.PP
.B
u16int leswap2(u16int u)
.br
u32int leswap4(u32int u)
.br
u64int leswap8(u64int u)
.PP
.B
int leieeeftoa32(char *a, uint n, void *f)
.br
int leieeeftoa64(char *a, uint n, void *f)
.br
int leieeeftoa80(char *a, uint n, void *f)
.PP
.B
u16int leload2(uchar *p)
.br
u32int leload4(uchar *p)
.br
u64int leload8(uchar *p)
.PP
.B
int ieeeftoa32(char *a, uint n, u32int u)
.br
int ieeeftoa64(char *a, uint n, u32int hi, u32int lo)
.SH DESCRIPTION
These functions provide
machine-independent access to data in a particular byte order.
.PP
.IR Beswap2 ,
.IR beswap4 ,
and
.I beswap8
return the 2-byte, 4-byte, and 8-byte
big-endian representation of the bytes in
.IR val ,
respectively.
.PP
.IR Beload2 ,
.IR beload4 ,
and
.I beload8
return the 2-byte, 4-byte, and 8-byte
big-endian interpretation of the bytes at
.IR p ,
respectively.
.PP
.IR Beieeeftoa32 ,
.IR beieeeftoa64 ,
and
.I beieeeftoa80
format the big-endian 4-byte, 8-byte, or 10-byte IEEE floating-point value
at
.IR f
into the
.IR n -byte
string buffer
.IR a .
.PP
.IR Leswap2 ,
.IR leswap4 ,
etc. are the little-endian equivalents of the routines just described.
.PP
.I Ieeeftoa32
and
.I ieeeftoa64
format a local machine byte-order floating-point value into the
.IR n -byte
string buffer
.IR a .
.I Ieeeftoa32
expects a 32-bit floating-point value stored in the bits of
.IR u .
.I Ieeeftoa64
expects a 64-bit floating-point value whose high 32-bits are in
.I hi
and low 32-bits are in
.IR lo .
.SH SOURCE
.B \*9/src/libmach
.SH "SEE ALSO"
.IM mach (3)
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