swab − swap adjacent bytes #include<unistd.h> , void *void swab(const void *from The function copies n bytes from the array pointed to by from to the array pointed to by 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.) The function returns no value. For an explanation of the terms used in this section, see ┌──────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├──────────┼───────────────┼─────────┤ │ │ Thread safety │ MT‐Safe │ └──────────┴───────────────┴─────────┘ POSIX.1‐2001, POSIX.1‐2008, SVr4, 4.3BSD. This page is part of release 5.07 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/.