test/ossl_test_endian.h

   1 /*
   2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef HEADER_INTERNAL_ENDIAN_H
  11 # define HEADER_INTERNAL_ENDIAN_H
  12
  13 # define DECLARE_IS_ENDIAN \
  14     const union { \
  15         long one; \
  16         char little; \
  17     } ossl_is_endian = { 1 }
  18
  19 # define IS_LITTLE_ENDIAN (ossl_is_endian.little != 0)
  20 # define IS_BIG_ENDIAN    (ossl_is_endian.little == 0)
  21
  22 #endif