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