bstring.3

早期freebsd实现

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.\"     @(#)bstring.3	8.1 (Berkeley) 6/4/93
.\"
.Dd June 4, 1993
.Dt BSTRING 3
.Os
.Sh NAME
.Nm bcmp ,
.Nm bcopy ,
.Nm bzero ,
.Nm memccpy ,
.Nm memchr ,
.Nm memcmp ,
.Nm memcpy ,
.Nm memmove,
.Nm memset
.Nd byte string operations
.Sh SYNOPSIS
.Fd #include <string.h>
.Ft int
.Fn bcmp "const void *b1" "const void *b2" "size_t len"
.Ft void
.Fn bcopy "const void *src" "void *dst" "size_t len"
.Ft void
.Fn bzero "void *b" "size_t len"
.Ft void *
.Fn memchr "const void *b" "int c" "size_t len"
.Ft int
.Fn memcmp "const void *b1" "const void *b2" "size_t len"
.Ft void *
.Fn memccpy "void *dst" "const void *src" "int c" "size_t len"
.Ft void *
.Fn memcpy "void *dst" "const void *src" "size_t len"
.Ft void *
.Fn memmove "void *dst" "const void *src" "size_t len"
.Ft void *
.Fn memset "void *b" "int c" "size_t len"
.Sh DESCRIPTION
These functions operate on variable length strings of bytes.
They do not check for terminating null bytes as the routines
listed in
.Xr string 3
do.
.Pp
See the specific manual pages for more information.
.Sh SEE ALSO
.Xr bcmp 3 ,
.Xr bcopy 3 ,
.Xr bzero 3 ,
.Xr memccpy 3 ,
.Xr memchr 3 ,
.Xr memcmp 3 ,
.Xr memcpy 3 ,
.Xr memmove 3 ,
.Xr memset 3
.Sh STANDARDS
The functions
.Fn memchr ,
.Fn memcmp ,
.Fn memcpy ,
.Fn memmove ,
and
.Fn memset
conform to
.St -ansiC .
.Sh HISTORY
The functions
.Fn bzero
and
.Fn memccpy
appeared in
.Bx 4.3 ;
the functions
.Fn bcmp ,
.Fn bcopy ,
appeared in
.Bx 4.2 .