--- libeio/ecb.h	2012/04/24 18:47:50	1.11
+++ libeio/ecb.h	2012/05/28 17:00:19	1.12
@@ -30,6 +30,9 @@
 #ifndef ECB_H
 #define ECB_H
 
+/* 16 bits major, 16 bits minor */
+#define ECB_VERSION 0x00010001
+
 #ifdef _WIN32
   typedef   signed char   int8_t;
   typedef unsigned char  uint8_t;
@@ -44,8 +47,23 @@
     typedef   signed __int64   int64_t;
     typedef unsigned __int64   uint64_t;
   #endif
+  #ifdef _WIN64
+    #define ECB_PTRSIZE 8
+    typedef uint64_t uintptr_t;
+    typedef  int64_t  intptr_t;
+  #else
+    #define ECB_PTRSIZE 4
+    typedef uint32_t uintptr_t;
+    typedef  int32_t  intptr_t;
+  #endif
+ typedef intptr_t ptrdiff_t;
 #else
   #include <inttypes.h>
+  #if UINTMAX_MAX > 0xffffffffU
+    #define ECB_PTRSIZE 8
+  #else
+    #define ECB_PTRSIZE 4
+  #endif
 #endif
 
 /* many compilers define _GNUC_ to some versions but then only implement
@@ -312,6 +330,11 @@
   }
 #endif
 
+ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
+ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
+ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
+ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
+
 ecb_function_ uint8_t  ecb_bitrev8  (uint8_t  x) ecb_const;
 ecb_function_ uint8_t  ecb_bitrev8  (uint8_t  x)
 {