SWAB(3) - man page online | library functions

Swap adjacent bytes.

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 different 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)
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2015-08-08 SWAB(3)
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swab(3) referred by bzero(3) | explicit_bzero(3) | memset(3) | TIFFswab(3tiff)
refer to attributes(7) | bstring(3) | feature_test_macros(7)