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ntoh.c
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 2000
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
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00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 /*
00039  * A test program for PR_htons, PR_ntohs, PR_htonl, PR_ntohl,
00040  * PR_htonll, and PR_ntohll.
00041  */
00042 
00043 #include "prnetdb.h"
00044 
00045 #include <stdio.h>
00046 #include <string.h>
00047 #include <stdlib.h>
00048 
00049 /* Byte sequence in network byte order */
00050 static unsigned char bytes_n[8] = { 1, 2, 3, 4, 5, 6, 7, 8 };
00051 
00052 /* Integers in host byte order */
00053 static PRUint16 s_h = 0x0102;
00054 static PRUint32 l_h = 0x01020304;
00055 static PRUint64 ll_h = LL_INIT(0x01020304, 0x05060708);
00056 
00057 int main()
00058 {
00059     union {
00060         PRUint16 s;
00061         PRUint32 l;
00062         PRUint64 ll;
00063         unsigned char bytes[8];
00064     } un;
00065 
00066     un.s = s_h;
00067     printf("%u %u\n",
00068         un.bytes[0], un.bytes[1]);
00069     un.s = PR_htons(un.s);
00070     printf("%u %u\n",
00071         un.bytes[0], un.bytes[1]);
00072     if (memcmp(un.bytes, bytes_n, 2)) {
00073         fprintf(stderr, "PR_htons failed\n");
00074         exit(1);
00075     }
00076     un.s = PR_ntohs(un.s);
00077     printf("%u %u\n",
00078         un.bytes[0], un.bytes[1]);
00079     if (un.s != s_h) {
00080         fprintf(stderr, "PR_ntohs failed\n");
00081         exit(1);
00082     }
00083 
00084     un.l = l_h;
00085     printf("%u %u %u %u\n",
00086         un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3]);
00087     un.l = PR_htonl(un.l);
00088     printf("%u %u %u %u\n",
00089         un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3]);
00090     if (memcmp(un.bytes, bytes_n, 4)) {
00091         fprintf(stderr, "PR_htonl failed\n");
00092         exit(1);
00093     }
00094     un.l = PR_ntohl(un.l);
00095     printf("%u %u %u %u\n",
00096         un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3]);
00097     if (un.l != l_h) {
00098         fprintf(stderr, "PR_ntohl failed\n");
00099         exit(1);
00100     }
00101 
00102     un.ll = ll_h;
00103     printf("%u %u %u %u %u %u %u %u\n",
00104         un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3],
00105         un.bytes[4], un.bytes[5], un.bytes[6], un.bytes[7]);
00106     un.ll = PR_htonll(un.ll);
00107     printf("%u %u %u %u %u %u %u %u\n",
00108         un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3],
00109         un.bytes[4], un.bytes[5], un.bytes[6], un.bytes[7]);
00110     if (memcmp(un.bytes, bytes_n, 8)) {
00111         fprintf(stderr, "PR_htonll failed\n");
00112         exit(1);
00113     }
00114     un.ll = PR_ntohll(un.ll);
00115     printf("%u %u %u %u %u %u %u %u\n",
00116         un.bytes[0], un.bytes[1], un.bytes[2], un.bytes[3],
00117         un.bytes[4], un.bytes[5], un.bytes[6], un.bytes[7]);
00118     if (LL_NE(un.ll, ll_h)) {
00119         fprintf(stderr, "PR_ntohll failed\n");
00120         exit(1);
00121     }
00122 
00123     printf("PASS\n");
00124     return 0;
00125 }