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authorNikos Mavrogiannopoulos <nmav@gnutls.org>2015-08-23 19:19:45 +0200
committerNikos Mavrogiannopoulos <nmav@gnutls.org>2015-08-23 19:27:01 +0200
commitf84d8c0d536a1b6a160ddceadf7fade8d7b2edaa (patch)
treeea8ded214d074604f4bbfbd9ed31a07beb48f21d /lib/num.c
parent172ae7efd99ce30d3bdfc2a35e0335687ef70a0f (diff)
downloadgnutls-f84d8c0d536a1b6a160ddceadf7fade8d7b2edaa.tar.gz
Removed the 'gnutls_' prefix from files to simplify file naming
Diffstat (limited to 'lib/num.c')
-rw-r--r--lib/num.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/lib/num.c b/lib/num.c
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+/*
+ * Copyright (C) 2000-2012 Free Software Foundation, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * The GnuTLS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+/* This file contains the functions needed for 64 bit integer support in
+ * TLS, and functions which ease the access to TLS vectors (data of given size).
+ */
+
+#include "gnutls_int.h"
+#include <num.h>
+#include "errors.h"
+
+/* This function will add one to uint64 x.
+ * Returns 0 on success, or -1 if the uint64 max limit
+ * has been reached.
+ */
+int _gnutls_uint64pp(uint64 * x)
+{
+ register int i, y = 0;
+
+ for (i = 7; i >= 0; i--) {
+ y = 0;
+ if (x->i[i] == 0xff) {
+ x->i[i] = 0;
+ y = 1;
+ } else
+ x->i[i]++;
+
+ if (y == 0)
+ break;
+ }
+ if (y != 0)
+ return -1; /* over 64 bits! WOW */
+
+ return 0;
+}
+
+/* This function will add one to uint48 x.
+ * Returns 0 on success, or -1 if the uint48 max limit
+ * has been reached.
+ */
+int _gnutls_uint48pp(uint64 * x)
+{
+ register int i, y = 0;
+
+ for (i = 7; i >= 3; i--) {
+ y = 0;
+ if (x->i[i] == 0xff) {
+ x->i[i] = 0;
+ y = 1;
+ } else
+ x->i[i]++;
+
+ if (y == 0)
+ break;
+ }
+ if (y != 0)
+ return -1; /* over 48 bits */
+
+ return 0;
+}