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+/*
+ Copyright 2011 David Robillard <http://drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef ZIX_COMMON_H
+#define ZIX_COMMON_H
+
+#include <stdbool.h>
+
+/**
+ @addtogroup zix
+ @{
+*/
+
+/** @cond */
+#ifdef ZIX_SHARED
+# ifdef __WIN32__
+# define ZIX_LIB_IMPORT __declspec(dllimport)
+# define ZIX_LIB_EXPORT __declspec(dllexport)
+# else
+# define ZIX_LIB_IMPORT __attribute__((visibility("default")))
+# define ZIX_LIB_EXPORT __attribute__((visibility("default")))
+# endif
+# ifdef ZIX_INTERNAL
+# define ZIX_API ZIX_LIB_EXPORT
+# else
+# define ZIX_API ZIX_LIB_IMPORT
+# endif
+#else
+# define ZIX_API
+#endif
+/** @endcond */
+
+typedef enum {
+ ZIX_STATUS_SUCCESS,
+ ZIX_STATUS_ERROR,
+ ZIX_STATUS_NO_MEM,
+ ZIX_STATUS_NOT_FOUND,
+ ZIX_STATUS_EXISTS,
+} ZixStatus;
+
+/**
+ Function for comparing two elements.
+*/
+typedef int (*ZixComparator)(const void* a, const void* b, void* user_data);
+
+/**
+ Function for testing equality of two elements.
+*/
+typedef bool (*ZixEqualFunc)(const void* a, const void* b);
+
+/**
+ Function to destroy an element.
+*/
+typedef void (*ZixDestroyFunc)(const void* ptr);
+
+/**@}
+*/
+
+#endif /* ZIX_COMMON_H */