1 files changed, 94 insertions, 0 deletions
diff --git a/src/util/common_endian.c b/src/util/common_endian.c
new file mode 100644
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--- /dev/null
+++ b/src/util/common_endian.c
@@ -0,0 +1,94 @@
+/*
+     This file is part of GNUnet.
+     (C) 2001, 2002, 2003, 2004, 2006, 2012 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 2, 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
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file util/common_endian.c
+ * @brief endian conversion helpers
+ * @author Christian Grothoff
+ */
+
+#include "platform.h"
+#include "gnunet_common.h"
+
+#define LOG(kind,...) GNUNET_log_from (kind, "util",__VA_ARGS__)
+
+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
+}
+
+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
+}
+
+
+/**
+ * Convert double to network-byte-order.
+ * @param d the value in network byte order
+ * @return the same value in host byte order
+ */
+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;
+}
+
+
+/**
+ * Convert double to host-byte-order
+ * @param d the value in network byte order
+ * @return the same value in host byte order
+ */
+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 */