nsprpub/pr/tests/ntoh.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 /*
   7  * A test program for PR_htons, PR_ntohs, PR_htonl, PR_ntohl,
   8  * PR_htonll, and PR_ntohll.
   9  */
  10
  11 #include "prnetdb.h"
  12
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <stdlib.h>
  16
  17 /* Byte sequence in network byte order */
  18 static unsigned char bytes_n[8] = { 1, 2, 3, 4, 5, 6, 7, 8 };
  19
  20 /* Integers in host byte order */
  21 static PRUint16 s_h = 0x0102;
  22 static PRUint32 l_h = 0x01020304;
  23 static PRUint64 ll_h = LL_INIT(0x01020304, 0x05060708);
  24
  25 int main(int argc, char **argv)
  26 {
  27     union {
  28         PRUint16 s;
  29         PRUint32 l;
  30         PRUint64 ll;
  31         unsigned char bytes[8];
  32     } un;
  33
  34     un.s = s_h;
  35     printf("%u %u\n",
  36            un.bytes[0], un.bytes[1]);
  37     un.s = PR_htons(un.s);
  38     printf("%u %u\n",
  39            un.bytes[0], un.bytes[1]);
  40     if (memcmp(un.bytes, bytes_n, 2)) {
  41         fprintf(stderr, "PR_htons failed\n");
  42         exit(1);
  43     }
  44     un.s = PR_ntohs(un.s);
  45     printf("%u %u\n",
  46            un.bytes[0], un.bytes[1]);
  47     if (un.s != s_h) {
  48         fprintf(stderr, "PR_ntohs failed\n");
  49         exit(1);
  50     }
  51
  52     un.l = l_h;
  53     printf("%u %u %u %u\n",
  54            un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3]);
  55     un.l = PR_htonl(un.l);
  56     printf("%u %u %u %u\n",
  57            un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3]);
  58     if (memcmp(un.bytes, bytes_n, 4)) {
  59         fprintf(stderr, "PR_htonl failed\n");
  60         exit(1);
  61     }
  62     un.l = PR_ntohl(un.l);
  63     printf("%u %u %u %u\n",
  64            un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3]);
  65     if (un.l != l_h) {
  66         fprintf(stderr, "PR_ntohl failed\n");
  67         exit(1);
  68     }
  69
  70     un.ll = ll_h;
  71     printf("%u %u %u %u %u %u %u %u\n",
  72            un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3],
  73            un.bytes[4], un.bytes[5], un.bytes[6], un.bytes[7]);
  74     un.ll = PR_htonll(un.ll);
  75     printf("%u %u %u %u %u %u %u %u\n",
  76            un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3],
  77            un.bytes[4], un.bytes[5], un.bytes[6], un.bytes[7]);
  78     if (memcmp(un.bytes, bytes_n, 8)) {
  79         fprintf(stderr, "PR_htonll failed\n");
  80         exit(1);
  81     }
  82     un.ll = PR_ntohll(un.ll);
  83     printf("%u %u %u %u %u %u %u %u\n",
  84            un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3],
  85            un.bytes[4], un.bytes[5], un.bytes[6], un.bytes[7]);
  86     if (LL_NE(un.ll, ll_h)) {
  87         fprintf(stderr, "PR_ntohll failed\n");
  88         exit(1);
  89     }
  90
  91     printf("PASS\n");
  92     return 0;
  93 }