tests/test-byte-order.c

   1 /*
   2  * Copyright (c) 2010, 2011 Nicira, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <config.h>
  18 #include "byte-order.h"
  19 #include <assert.h>
  20 #include <inttypes.h>
  21
  22 int
  23 main(void)
  24 {
  25 #ifndef __CHECKER__
  26     /* I picked some random numbers. */
  27     const uint16_t s = 0xc9bd;
  28     const uint32_t l = 0xffe56ae8;
  29     const uint64_t ll = UINT64_C(0xb6fe878a9117ecdb);
  30
  31     assert(htons(ntohs(s)) == s);
  32     assert(ntohs(htons(s)) == s);
  33     assert(CONSTANT_HTONS(ntohs(s)) == s);
  34     assert(ntohs(CONSTANT_HTONS(s)) == s);
  35     assert(ntohs(CONSTANT_HTONS(l)) == (uint16_t) l);
  36     assert(ntohs(CONSTANT_HTONS(ll)) == (uint16_t) ll);
  37
  38     assert(htonl(ntohl(l)) == l);
  39     assert(ntohl(htonl(l)) == l);
  40     assert(CONSTANT_HTONL(ntohl(l)) == l);
  41     assert(ntohl(CONSTANT_HTONL(l)) == l);
  42     assert(ntohl(CONSTANT_HTONL(ll)) == (uint32_t) ll);
  43
  44     assert(htonll(ntohll(ll)) == ll);
  45     assert(ntohll(htonll(ll)) == ll);
  46     assert(CONSTANT_HTONLL(ntohll(ll)) == ll);
  47     assert(ntohll(CONSTANT_HTONLL(ll)));
  48 #else  /* __CHECKER__ */
  49 /* Making sparse happy with this code makes it unreadable, so don't bother. */
  50 #endif
  51
  52     return 0;
  53 }