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diff --git a/ecb.h b/ecb.h
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+/*
+ * libecb - http://software.schmorp.de/pkg/libecb
+ *
+ * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
+ * Copyright (©) 2011 Emanuele Giaquinta
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ *
+ *   1.  Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ *
+ *   2.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, 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 OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ECB_H
+#define ECB_H
+
+#include <inttypes.h>
+
+/* many compilers define _GNUC_ to some versions but then only implement
+ * what their idiot authors think are the "more important" extensions,
+ * causing enourmous grief in return for some better fake benchmark numbers.
+ * or so.
+ * we try to detect these and simply assume they are not gcc - if they have
+ * an issue with that they should have done it right in the first place.
+ */
+#ifndef ECB_GCC_VERSION
+# if defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__llvm__)
+#  define ECB_GCC_VERSION(major,minor) 0
+# else
+#  define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
+# endif
+#endif
+
+#ifndef __cplusplus
+# if __STDC_VERSION__ >= 199901L
+#  define ECB_INLINE static inline
+typedef _Bool ecb_bool;
+# else
+#  define ECB_INLINE static inline /* yeah! */
+typedef int ecb_bool;
+# endif
+#else
+# define ECB_INLINE static inline
+typedef bool ecb_bool;
+#endif
+
+#define ECB_CONCAT_(a, b) a ## b
+#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
+#define ECB_STRINGIFY_(a) # a
+#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
+
+#define ECB_HEADER_INLINE ECB_INLINE
+
+#if ECB_GCC_VERSION(3,1)
+# define ecb_attribute(attrlist)        __attribute__(attrlist)
+# define ecb_is_constant(expr)          __builtin_constant_p (expr)
+# define ecb_expect(expr,value)         __builtin_expect ((expr),(value))
+# define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
+#else
+# define ecb_attribute(attrlist)
+# define ecb_is_constant(expr)          0
+# define ecb_expect(expr,value)         (expr)
+# define ecb_prefetch(addr,rw,locality)
+#endif
+
+/* no emulation for ecb_decltype */
+#if ECB_GCC_VERSION(4,5)
+# define ecb_decltype(x) __decltype(x)
+#elif ECB_GCC_VERSION(3,0)
+# define ecb_decltype(x) typeof(x)
+#endif
+
+#define ecb_artificial ecb_attribute ((__artificial__)) /* 4.3 */
+#define ecb_noinline   ecb_attribute ((__noinline__))
+#define ecb_noreturn   ecb_attribute ((__noreturn__))
+#define ecb_unused     ecb_attribute ((__unused__))
+#define ecb_const      ecb_attribute ((__const__))
+#define ecb_pure       ecb_attribute ((__pure__))
+#define ecb_hot        ecb_attribute ((__hot__))	/* 4.3 */
+#define ecb_cold       ecb_attribute ((__cold__))	/* 4.3 */
+
+/* put into if's if you are very sure that the expression */
+/* is mostly true or mostly false. note that these return */
+/* booleans, not the expression. */
+#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
+#define ecb_expect_true(expr)  ecb_expect (!!(expr), 1)
+#define ecb_likely(expr)   ecb_expect_true  (expr)
+#define ecb_unlikely(expr) ecb_expect_false (expr)
+
+/* try to tell the compiler that some condition is definitely true */
+#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
+
+/* count trailing zero bits and count # of one bits */
+#if ECB_GCC_VERSION(3,4)
+#define ecb_ctz32(x)      __builtin_ctz      (x)
+#define ecb_popcount32(x) __builtin_popcount (x)
+#else
+ECB_HEADER_INLINE int ecb_ctz32 (uint32_t x) ecb_const;
+ECB_HEADER_INLINE int
+ecb_ctz32 (uint32_t x)
+{
+  int r = 0;
+
+  x &= -x; /* this isolates the lowest bit */
+
+  if (x & 0xaaaaaaaa) r +=  1;
+  if (x & 0xcccccccc) r +=  2;
+  if (x & 0xf0f0f0f0) r +=  4;
+  if (x & 0xff00ff00) r +=  8;
+  if (x & 0xffff0000) r += 16;
+
+  return r;
+}
+
+ECB_HEADER_INLINE int ecb_popcount32 (uint32_t x) ecb_const;
+ECB_HEADER_INLINE int
+ecb_popcount32 (uint32_t x)
+{
+  x -=  (x >> 1) & 0x55555555;
+  x  = ((x >> 2) & 0x33333333) + (x & 0x33333333);
+  x  = ((x >> 4) + x) & 0x0f0f0f0f;
+  x *= 0x01010101;
+
+  return x >> 24;
+}
+#endif
+
+#if ECB_GCC_VERSION(4,3)
+# define ecb_bswap32(x) __builtin_bswap32 (x)
+# define ecb_bswap16(x) (__builtin_bswap32(x) >> 16)
+#else
+ECB_HEADER_INLINE uint32_t ecb_bswap32 (uint32_t x) ecb_const;
+ECB_HEADER_INLINE uint32_t
+ecb_bswap32 (uint32_t x)
+{
+  return (x >> 24)
+      | ((x >>  8) & 0x0000ff00)
+      | ((x <<  8) & 0x00ff0000)
+      |  (x << 24);
+}
+
+ECB_HEADER_INLINE uint32_t ecb_bswap16 (uint32_t x) ecb_const;
+ECB_HEADER_INLINE uint32_t
+ecb_bswap16 (uint32_t x)
+{
+  return ((x >>  8) & 0xff)
+      |  ((x <<  8) & 0x00ff0000)
+      |  (x << 24);
+}
+#endif
+
+#if ECB_GCC_VERSION(4,5)
+# define ecb_unreachable() __builtin_unreachable ()
+#else
+/* this seems to work fine, but gcc always emits a warning for it :/ */
+ECB_HEADER_INLINE void ecb_unreachable (void) ecb_noreturn;
+ECB_HEADER_INLINE void ecb_unreachable (void) { }
+#endif
+
+ECB_HEADER_INLINE unsigned char ecb_byteorder_helper (void) ecb_const;
+ECB_HEADER_INLINE unsigned char
+ecb_byteorder_helper (void)
+{
+  const uint32_t u = 0x11223344;
+  return *(unsigned char *)&u;
+}
+
+ECB_HEADER_INLINE ecb_bool ecb_big_endian    (void) ecb_const;
+ECB_HEADER_INLINE ecb_bool ecb_big_endian    (void) { return ecb_byteorder_helper () == 0x11; };
+ECB_HEADER_INLINE ecb_bool ecb_little_endian (void) ecb_const;
+ECB_HEADER_INLINE ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; };
+
+#if ECB_GCC_VERSION(3,0)
+# define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
+#else
+# define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
+#endif
+
+#if ecb_cplusplus_does_not_suck
+// does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm)
+template<typename T, int N>
+static inline int ecb_array_length (const T (&arr)[N])
+{
+  return N;
+}
+#else
+#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
+#endif
+
+ECB_INLINE uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
+ECB_INLINE uint32_t
+ecb_rotr32 (uint32_t x, unsigned int count)
+{
+  return (x << (32 - count)) | (x >> count);
+}
+
+ECB_INLINE uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
+ECB_INLINE uint32_t
+ecb_rotl32 (uint32_t x, unsigned int count)
+{
+  return (x >> (32 - count)) | (x << count);
+}
+
+#endif
+