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man:swab

SWAB(3) Linux Programmer's Manual SWAB(3)

NAME

     swab - swap adjacent bytes

SYNOPSIS

     #define _XOPEN_SOURCE       /* See feature_test_macros(7) */
     #include <unistd.h>
     void swab(const void *from, void *to, ssize_t n);

DESCRIPTION

     The swab() function copies n bytes from the array pointed to by from to
     the array pointed to by to, exchanging adjacent  even  and  odd  bytes.
     This  function is used to exchange data between machines that have dif-
     ferent low/high byte ordering.
     This function does nothing when n is negative.  When n is positive  and
     odd, it handles n-1 bytes as above, and does something unspecified with
     the last byte.  (In other words, n should be even.)

RETURN VALUE

     The swab() function returns no value.

ATTRIBUTES

     For  an  explanation  of  the  terms  used   in   this   section,   see
     attributes(7).
     +----------+---------------+---------+
     |Interface | Attribute     | Value   |
     +----------+---------------+---------+
     |swab()    | Thread safety | MT-Safe |
     +----------+---------------+---------+

CONFORMING TO

     POSIX.1-2001, POSIX.1-2008, SVr4, 4.3BSD.

SEE ALSO

     bstring(3)

COLOPHON

     This  page  is  part of release 4.16 of the Linux man-pages project.  A
     description of the project, information about reporting bugs,  and  the
     latest     version     of     this    page,    can    be    found    at
     https://www.kernel.org/doc/man-pages/.
                                2015-08-08                           SWAB(3)
/data/webs/external/dokuwiki/data/pages/man/swab.txt · Last modified: 2019/05/17 09:32 by 127.0.0.1

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