Merge in all updates for autoconf

[awesomized/libmemcached] / example / byteorder.cc

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+/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
+ * 
+ *  Libmemcached library
+ *
+ *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
+ *  Copyright (C) 2006-2009 Brian Aker All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are
+ *  met:
+ *
+ *      * Redistributions of source code must retain the above copyright
+ *  notice, this list of conditions and the following disclaimer.
+ *
+ *      * Redistributions in binary form must reproduce the above
+ *  copyright notice, this list of conditions and the following disclaimer
+ *  in the documentation and/or other materials provided with the
+ *  distribution.
+ *
+ *      * The names of its contributors may not be used to endorse or
+ *  promote products derived from this software without specific prior
+ *  written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+
+#include <example/byteorder.h>
+
+/* Byte swap a 64-bit number. */
+#ifndef swap64
+static inline uint64_t swap64(uint64_t in)
+{
+#ifndef WORDS_BIGENDIAN
+  /* Little endian, flip the bytes around until someone makes a faster/better
+   * way to do this. */
+  uint64_t rv= 0;
+  for (uint8_t x= 0; x < 8; x++)
+  {
+    rv= (rv << 8) | (in & 0xff);
+    in >>= 8;
+  }
+  return rv;
+#else
+  /* big-endian machines don't need byte swapping */
+  return in;
+#endif // WORDS_BIGENDIAN
+}
+#endif
+
+#ifdef HAVE_HTONLL
+
+uint64_t example_ntohll(uint64_t value)
+{
+  return ntohll(value);
+}
+
+uint64_t example_htonll(uint64_t value)
+{
+  return htonll(value);
+}
+
+#else // HAVE_HTONLL
+
+uint64_t example_ntohll(uint64_t value)
+{
+  return swap64(value);
+}
+
+uint64_t example_htonll(uint64_t value)
+{
+  return swap64(value);
+}
+
+#endif // HAVE_HTONLL