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bswap(3)                Library Functions Manual                bswap(3)

НАЗВАНИЕ

       bswap_16, bswap_32, bswap_64 - reverse order of bytes

БИБЛИОТЕКА

       Standard C library (libc, -lc)

СИНТАКСИС

       #include <byteswap.h>

       uint16_t bswap_16(uint16_t x);
       uint32_t bswap_32(uint32_t x);
       uint64_t bswap_64(uint64_t x);

ОПИСАНИЕ

       These functions return a value in which the order of the bytes in
       their 2-, 4-, or 8-byte arguments is reversed.

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

       These functions return the value of their argument with the bytes
       reversed.

ОШИБКИ

       These functions always succeed.

СТАНДАРТЫ

       GNU.

ПРИМЕРЫ

       The program below swaps the bytes of the 8-byte integer supplied
       as its command-line argument.  The following shell session
       demonstrates the use of the program:

           $ ./a.out 0x0123456789abcdef
           0x123456789abcdef ==> 0xefcdab8967452301

   Program source

       #include <byteswap.h>
       #include <inttypes.h>
       #include <stdint.h>
       #include <stdio.h>
       #include <stdlib.h>

       int
       main(int argc, char *argv[])
       {
           uint64_t x;

           if (argc != 2) {
               fprintf(stderr, "Usage: %s <num>\n", argv[0]);
               exit(EXIT_FAILURE);
           }

           x = strtoull(argv[1], NULL, 0);
           printf("%#" PRIx64 " ==> %#" PRIx64 "\n", x, bswap_64(x));

           exit(EXIT_SUCCESS);
       }

СМОТРИТЕ ТАКЖЕ

       byteorder(3), endian(3)

КОЛОФОН

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
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       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.9.1.tar.gz
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       man-pages@man7.org

Linux man-pages 6.9.1          2024-06-15                       bswap(3)

Страницы, которые ссылаются на эту страницу: byteorder(3), endian(3)