Cleanup of the byteorder patch

[umurmur.git] / src / byteorder.h

diff --git a/src/byteorder.h b/src/byteorder.h
new file mode 100644 (file)
index 0000000..685ce65
--- /dev/null
+++ b/src/byteorder.h
@@ -0,0 +1,69 @@
+/* Copyright (C) 2014, Felix Morgner <felix.morgner@gmail.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 the Developers 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 FOUNDATION 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 BYTEORDER_H_
+#define BYTEORDER_H_
+
+#include <stdint.h>
+
+#if defined(NETBSD) || defined(FREEBSD) || defined(OPENBSD) || defined(MACOSX)
+#include <machine/endian.h>
+#if BYTE_ORDER == BIG_ENDIAN
+#define BYTE_ORDER_BIG_ENDIAN
+#endif // BYTE_ORDER == BIG_ENDIAN
+#elif defined(LINUX)
+#include <endian.h>
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define BYTE_ORDER_BIG_ENDIAN
+#endif // __BYTE_ORDER == __BIG_ENDIAN
+#endif // defined(NETBSD) || defined(FREEBSD) || defined(OPENBSD)
+
+#if defined(__LP64__)
+#define BLOCKSIZE 2
+#define SHIFTBITS 63
+typedef uint64_t subblock;
+#if defined(BYTE_ORDER_BIG_ENDIAN)
+#define SWAPPED(x) (x)
+#elif defined( __x86_64__)
+#define SWAPPED(x) ({register uint64_t __out, __in = (x); __asm__("bswap %q0" : "=r"(__out) : "0"(__in)); __out;})
+#else
+#include <byteswap.h>
+#define SWAPPED(x) bswap_64(x)
+#endif // defined(BYTE_ORDER_BIG_ENDIAN)
+#else
+#define BLOCKSIZE 4
+#define SHIFTBITS 31
+typedef uint32_t subblock;
+#define SWAPPED(x) htonl(x)
+#endif // defined(__LP64__)
+
+#define HIGHBIT (1<<SHIFTBITS);
+
+#endif // BYTEORDER_H_