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diff --git a/src/endianconv.h b/src/endianconv.h
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+++ b/src/endianconv.h
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+/* See endianconv.c top comments for more information
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * Copyright (c) 2011-2012, Salvatore Sanfilippo <antirez at gmail dot com>
+ * 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.
+ *   * Neither the name of Redis nor the names of its contributors may 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.
+ */
+
+#ifndef __ENDIANCONV_H
+#define __ENDIANCONV_H
+
+#include "config.h"
+#include <stdint.h>
+
+void memrev16(void *p);
+void memrev32(void *p);
+void memrev64(void *p);
+uint16_t intrev16(uint16_t v);
+uint32_t intrev32(uint32_t v);
+uint64_t intrev64(uint64_t v);
+
+/* variants of the function doing the actual conversion only if the target
+ * host is big endian */
+#if (BYTE_ORDER == LITTLE_ENDIAN)
+#define memrev16ifbe(p) ((void)(0))
+#define memrev32ifbe(p) ((void)(0))
+#define memrev64ifbe(p) ((void)(0))
+#define intrev16ifbe(v) (v)
+#define intrev32ifbe(v) (v)
+#define intrev64ifbe(v) (v)
+#else
+#define memrev16ifbe(p) memrev16(p)
+#define memrev32ifbe(p) memrev32(p)
+#define memrev64ifbe(p) memrev64(p)
+#define intrev16ifbe(v) intrev16(v)
+#define intrev32ifbe(v) intrev32(v)
+#define intrev64ifbe(v) intrev64(v)
+#endif
+
+/* The functions htonu64() and ntohu64() convert the specified value to
+ * network byte ordering and back. In big endian systems they are no-ops. */
+#if (BYTE_ORDER == BIG_ENDIAN)
+#define htonu64(v) (v)
+#define ntohu64(v) (v)
+#else
+#define htonu64(v) intrev64(v)
+#define ntohu64(v) intrev64(v)
+#endif
+
+#ifdef REDIS_TEST
+int endianconvTest(int argc, char *argv[], int flags);
+#endif
+
+#endif