1 files changed, 95 insertions, 0 deletions

diff --git a/src/lib/util/common_endian.c b/src/lib/util/common_endian.c
new file mode 100644
index 000000000..59c15326d
--- /dev/null
+++ b/src/lib/util/common_endian.c
@@ -0,0 +1,95 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2001, 2002, 2003, 2004, 2006, 2012 GNUnet e.V.
+
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
+
+     GNUnet 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
+     Affero General Public License for more details.
+
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @file util/common_endian.c
+ * @brief endian conversion helpers
+ * @author Christian Grothoff
+ * @author Gabor X Toth
+ */
+
+
+#include "platform.h"
+#include "gnunet_util_lib.h"
+
+#define LOG(kind, ...) GNUNET_log_from (kind, "util-common-endian", __VA_ARGS__)
+
+
+#ifndef htonbe64
+uint64_t
+GNUNET_htonll (uint64_t n)
+{
+#if __BYTE_ORDER == __BIG_ENDIAN
+  return n;
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+  return (((uint64_t) htonl (n)) << 32) + htonl (n >> 32);
+#else
+  #error byteorder undefined
+#endif
+}
+
+
+#endif
+
+
+#ifndef be64toh
+uint64_t
+GNUNET_ntohll (uint64_t n)
+{
+#if __BYTE_ORDER == __BIG_ENDIAN
+  return n;
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+  return (((uint64_t) ntohl (n)) << 32) + ntohl (n >> 32);
+#else
+  #error byteorder undefined
+#endif
+}
+
+
+#endif
+
+
+double
+GNUNET_hton_double (double d)
+{
+  double res;
+  uint64_t *in = (uint64_t *) &d;
+  uint64_t *out = (uint64_t *) &res;
+
+  out[0] = GNUNET_htonll (in[0]);
+
+  return res;
+}
+
+
+double
+GNUNET_ntoh_double (double d)
+{
+  double res;
+  uint64_t *in = (uint64_t *) &d;
+  uint64_t *out = (uint64_t *) &res;
+
+  out[0] = GNUNET_ntohll (in[0]);
+
+  return res;
+}
+
+
+/* end of common_endian.c */