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+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Modified by the GLib Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GLib Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/* This file must not include any other glib header file and must thus
+ * not refer to variables from glibconfig.h
+ */
+
+#if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
+#error "Only <glib.h> can be included directly."
+#endif
+
+#ifndef __G_MACROS_H__
+#define __G_MACROS_H__
+
+/* We include stddef.h to get the system's definition of NULL
+ */
+#include <stddef.h>
+
+/* Here we provide G_GNUC_EXTENSION as an alias for __extension__,
+ * where this is valid. This allows for warningless compilation of
+ * "long long" types even in the presence of '-ansi -pedantic'.
+ */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)
+# define G_GNUC_EXTENSION __extension__
+#else
+# define G_GNUC_EXTENSION
+#endif
+
+/* Provide macros to feature the GCC function attribute.
+ */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
+#define G_GNUC_PURE \
+ __attribute__((__pure__))
+#define G_GNUC_MALLOC \
+ __attribute__((__malloc__))
+#else
+#define G_GNUC_PURE
+#define G_GNUC_MALLOC
+#endif
+
+#if __GNUC__ >= 4
+#define G_GNUC_NULL_TERMINATED __attribute__((__sentinel__))
+#else
+#define G_GNUC_NULL_TERMINATED
+#endif
+
+#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
+#define G_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x)))
+#define G_GNUC_ALLOC_SIZE2(x,y) __attribute__((__alloc_size__(x,y)))
+#else
+#define G_GNUC_ALLOC_SIZE(x)
+#define G_GNUC_ALLOC_SIZE2(x,y)
+#endif
+
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
+#define G_GNUC_PRINTF( format_idx, arg_idx ) \
+ __attribute__((__format__ (__printf__, format_idx, arg_idx)))
+#define G_GNUC_SCANF( format_idx, arg_idx ) \
+ __attribute__((__format__ (__scanf__, format_idx, arg_idx)))
+#define G_GNUC_FORMAT( arg_idx ) \
+ __attribute__((__format_arg__ (arg_idx)))
+#define G_GNUC_NORETURN \
+ __attribute__((__noreturn__))
+#define G_GNUC_CONST \
+ __attribute__((__const__))
+#define G_GNUC_UNUSED \
+ __attribute__((__unused__))
+#define G_GNUC_NO_INSTRUMENT \
+ __attribute__((__no_instrument_function__))
+#else /* !__GNUC__ */
+#define G_GNUC_PRINTF( format_idx, arg_idx )
+#define G_GNUC_SCANF( format_idx, arg_idx )
+#define G_GNUC_FORMAT( arg_idx )
+#define G_GNUC_NORETURN
+#define G_GNUC_CONST
+#define G_GNUC_UNUSED
+#define G_GNUC_NO_INSTRUMENT
+#endif /* !__GNUC__ */
+
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
+#define G_GNUC_DEPRECATED \
+ __attribute__((__deprecated__))
+#else
+#define G_GNUC_DEPRECATED
+#endif /* __GNUC__ */
+
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
+#define G_GNUC_DEPRECATED_FOR(f) \
+ __attribute__((deprecated("Use " #f " instead")))
+#else
+#define G_GNUC_DEPRECATED_FOR(f) G_GNUC_DEPRECATED
+#endif /* __GNUC__ */
+
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
+# define G_GNUC_MAY_ALIAS __attribute__((may_alias))
+#else
+# define G_GNUC_MAY_ALIAS
+#endif
+
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+#define G_GNUC_WARN_UNUSED_RESULT \
+ __attribute__((warn_unused_result))
+#else
+#define G_GNUC_WARN_UNUSED_RESULT
+#endif /* __GNUC__ */
+
+#ifndef G_DISABLE_DEPRECATED
+/* Wrap the gcc __PRETTY_FUNCTION__ and __FUNCTION__ variables with
+ * macros, so we can refer to them as strings unconditionally.
+ * usage not-recommended since gcc-3.0
+ */
+#if defined (__GNUC__) && (__GNUC__ < 3)
+#define G_GNUC_FUNCTION __FUNCTION__
+#define G_GNUC_PRETTY_FUNCTION __PRETTY_FUNCTION__
+#else /* !__GNUC__ */
+#define G_GNUC_FUNCTION ""
+#define G_GNUC_PRETTY_FUNCTION ""
+#endif /* !__GNUC__ */
+#endif /* !G_DISABLE_DEPRECATED */
+
+#define G_STRINGIFY(macro_or_string) G_STRINGIFY_ARG (macro_or_string)
+#define G_STRINGIFY_ARG(contents) #contents
+
+#define G_PASTE_ARGS(identifier1,identifier2) identifier1 ## identifier2
+#define G_PASTE(identifier1,identifier2) G_PASTE_ARGS (identifier1, identifier2)
+#define G_STATIC_ASSERT(expr) typedef struct { char Compile_Time_Assertion[(expr) ? 1 : -1]; } G_PASTE (_GStaticAssert_, __LINE__)
+
+/* Provide a string identifying the current code position */
+#if defined(__GNUC__) && (__GNUC__ < 3) && !defined(__cplusplus)
+# define G_STRLOC __FILE__ ":" G_STRINGIFY (__LINE__) ":" __PRETTY_FUNCTION__ "()"
+#else
+# define G_STRLOC __FILE__ ":" G_STRINGIFY (__LINE__)
+#endif
+
+/* Provide a string identifying the current function, non-concatenatable */
+#if defined (__GNUC__)
+# define G_STRFUNC ((const char*) (__PRETTY_FUNCTION__))
+#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 19901L
+# define G_STRFUNC ((const char*) (__func__))
+#else
+# define G_STRFUNC ((const char*) ("???"))
+#endif
+
+/* Guard C code in headers, while including them from C++ */
+#ifdef __cplusplus
+# define G_BEGIN_DECLS extern "C" {
+# define G_END_DECLS }
+#else
+# define G_BEGIN_DECLS
+# define G_END_DECLS
+#endif
+
+/* Provide definitions for some commonly used macros.
+ * Some of them are only provided if they haven't already
+ * been defined. It is assumed that if they are already
+ * defined then the current definition is correct.
+ */
+#ifndef NULL
+# ifdef __cplusplus
+# define NULL (0L)
+# else /* !__cplusplus */
+# define NULL ((void*) 0)
+# endif /* !__cplusplus */
+#endif
+
+#ifndef FALSE
+#define FALSE (0)
+#endif
+
+#ifndef TRUE
+#define TRUE (!FALSE)
+#endif
+
+#undef MAX
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+
+#undef MIN
+#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+
+#undef ABS
+#define ABS(a) (((a) < 0) ? -(a) : (a))
+
+#undef CLAMP
+#define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
+
+/* Count the number of elements in an array. The array must be defined
+ * as such; using this with a dynamically allocated array will give
+ * incorrect results.
+ */
+#define G_N_ELEMENTS(arr) (sizeof (arr) / sizeof ((arr)[0]))
+
+/* Macros by analogy to GINT_TO_POINTER, GPOINTER_TO_INT
+ */
+#define GPOINTER_TO_SIZE(p) ((gsize) (p))
+#define GSIZE_TO_POINTER(s) ((gpointer) (gsize) (s))
+
+/* Provide convenience macros for handling structure
+ * fields through their offsets.
+ */
+
+#if defined(__GNUC__) && __GNUC__ >= 4
+# define G_STRUCT_OFFSET(struct_type, member) \
+ ((glong) offsetof (struct_type, member))
+#else
+# define G_STRUCT_OFFSET(struct_type, member) \
+ ((glong) ((guint8*) &((struct_type*) 0)->member))
+#endif
+
+#define G_STRUCT_MEMBER_P(struct_p, struct_offset) \
+ ((gpointer) ((guint8*) (struct_p) + (glong) (struct_offset)))
+#define G_STRUCT_MEMBER(member_type, struct_p, struct_offset) \
+ (*(member_type*) G_STRUCT_MEMBER_P ((struct_p), (struct_offset)))
+
+/* Provide simple macro statement wrappers:
+ * G_STMT_START { statements; } G_STMT_END;
+ * This can be used as a single statement, like:
+ * if (x) G_STMT_START { ... } G_STMT_END; else ...
+ * This intentionally does not use compiler extensions like GCC's '({...})' to
+ * avoid portability issue or side effects when compiled with different compilers.
+ */
+#if !(defined (G_STMT_START) && defined (G_STMT_END))
+# define G_STMT_START do
+# define G_STMT_END while (0)
+#endif
+
+/* Allow the app programmer to select whether or not return values
+ * (usually char*) are const or not. Don't try using this feature for
+ * functions with C++ linkage.
+ */
+#ifdef G_DISABLE_CONST_RETURNS
+#define G_CONST_RETURN
+#else
+#define G_CONST_RETURN const
+#endif
+
+/*
+ * The G_LIKELY and G_UNLIKELY macros let the programmer give hints to
+ * the compiler about the expected result of an expression. Some compilers
+ * can use this information for optimizations.
+ *
+ * The _G_BOOLEAN_EXPR macro is intended to trigger a gcc warning when
+ * putting assignments in g_return_if_fail ().
+ */
+#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
+#define _G_BOOLEAN_EXPR(expr) \
+ __extension__ ({ \
+ int _g_boolean_var_; \
+ if (expr) \
+ _g_boolean_var_ = 1; \
+ else \
+ _g_boolean_var_ = 0; \
+ _g_boolean_var_; \
+})
+#define G_LIKELY(expr) (__builtin_expect (_G_BOOLEAN_EXPR(expr), 1))
+#define G_UNLIKELY(expr) (__builtin_expect (_G_BOOLEAN_EXPR(expr), 0))
+#else
+#define G_LIKELY(expr) (expr)
+#define G_UNLIKELY(expr) (expr)
+#endif
+
+#endif /* __G_MACROS_H__ */
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