mirror of
https://gitlab.gnome.org/GNOME/glib.git
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452 lines
16 KiB
C
452 lines
16 KiB
C
/* GLIB - Library of useful routines for C programming
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GLib Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GLib at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
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#error "Only <glib.h> can be included directly."
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#endif
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#ifndef __G_TYPES_H__
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#define __G_TYPES_H__
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#include <glibconfig.h>
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#include <glib/gmacros.h>
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G_BEGIN_DECLS
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/* Provide type definitions for commonly used types.
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* These are useful because a "gint8" can be adjusted
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* to be 1 byte (8 bits) on all platforms. Similarly and
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* more importantly, "gint32" can be adjusted to be
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* 4 bytes (32 bits) on all platforms.
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*/
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typedef char gchar;
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typedef short gshort;
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typedef long glong;
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typedef int gint;
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typedef gint gboolean;
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typedef unsigned char guchar;
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typedef unsigned short gushort;
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typedef unsigned long gulong;
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typedef unsigned int guint;
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typedef float gfloat;
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typedef double gdouble;
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/* Define min and max constants for the fixed size numerical types */
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#define G_MININT8 ((gint8) 0x80)
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#define G_MAXINT8 ((gint8) 0x7f)
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#define G_MAXUINT8 ((guint8) 0xff)
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#define G_MININT16 ((gint16) 0x8000)
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#define G_MAXINT16 ((gint16) 0x7fff)
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#define G_MAXUINT16 ((guint16) 0xffff)
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#define G_MININT32 ((gint32) 0x80000000)
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#define G_MAXINT32 ((gint32) 0x7fffffff)
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#define G_MAXUINT32 ((guint32) 0xffffffff)
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#define G_MININT64 ((gint64) G_GINT64_CONSTANT(0x8000000000000000))
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#define G_MAXINT64 G_GINT64_CONSTANT(0x7fffffffffffffff)
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#define G_MAXUINT64 G_GINT64_CONSTANT(0xffffffffffffffffU)
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typedef void* gpointer;
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typedef const void *gconstpointer;
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typedef gint (*GCompareFunc) (gconstpointer a,
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gconstpointer b);
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typedef gint (*GCompareDataFunc) (gconstpointer a,
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gconstpointer b,
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gpointer user_data);
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typedef gboolean (*GEqualFunc) (gconstpointer a,
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gconstpointer b);
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typedef void (*GDestroyNotify) (gpointer data);
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typedef void (*GFunc) (gpointer data,
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gpointer user_data);
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typedef guint (*GHashFunc) (gconstpointer key);
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typedef void (*GHFunc) (gpointer key,
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gpointer value,
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gpointer user_data);
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typedef void (*GFreeFunc) (gpointer data);
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/**
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* GTranslateFunc:
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* @str: the untranslated string
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* @data: user data specified when installing the function, e.g.
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* in g_option_group_set_translate_func()
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*
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* The type of functions which are used to translate user-visible
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* strings, for <option>--help</option> output.
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*
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* Returns: a translation of the string for the current locale.
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* The returned string is owned by GLib and must not be freed.
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*/
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typedef const gchar * (*GTranslateFunc) (const gchar *str,
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gpointer data);
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/* Define some mathematical constants that aren't available
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* symbolically in some strict ISO C implementations.
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*
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* Note that the large number of digits used in these definitions
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* doesn't imply that GLib or current computers in general would be
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* able to handle floating point numbers with an accuracy like this.
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* It's mostly an exercise in futility and future proofing. For
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* extended precision floating point support, look somewhere else
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* than GLib.
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*/
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#define G_E 2.7182818284590452353602874713526624977572470937000
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#define G_LN2 0.69314718055994530941723212145817656807550013436026
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#define G_LN10 2.3025850929940456840179914546843642076011014886288
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#define G_PI 3.1415926535897932384626433832795028841971693993751
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#define G_PI_2 1.5707963267948966192313216916397514420985846996876
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#define G_PI_4 0.78539816339744830961566084581987572104929234984378
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#define G_SQRT2 1.4142135623730950488016887242096980785696718753769
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/* Portable endian checks and conversions
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*
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* glibconfig.h defines G_BYTE_ORDER which expands to one of
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* the below macros.
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*/
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#define G_LITTLE_ENDIAN 1234
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#define G_BIG_ENDIAN 4321
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#define G_PDP_ENDIAN 3412 /* unused, need specific PDP check */
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/* Basic bit swapping functions
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*/
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#define GUINT16_SWAP_LE_BE_CONSTANT(val) ((guint16) ( \
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(guint16) ((guint16) (val) >> 8) | \
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(guint16) ((guint16) (val) << 8)))
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#define GUINT32_SWAP_LE_BE_CONSTANT(val) ((guint32) ( \
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(((guint32) (val) & (guint32) 0x000000ffU) << 24) | \
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(((guint32) (val) & (guint32) 0x0000ff00U) << 8) | \
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(((guint32) (val) & (guint32) 0x00ff0000U) >> 8) | \
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(((guint32) (val) & (guint32) 0xff000000U) >> 24)))
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#define GUINT64_SWAP_LE_BE_CONSTANT(val) ((guint64) ( \
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(((guint64) (val) & \
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(guint64) G_GINT64_CONSTANT (0x00000000000000ffU)) << 56) | \
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(((guint64) (val) & \
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(guint64) G_GINT64_CONSTANT (0x000000000000ff00U)) << 40) | \
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(((guint64) (val) & \
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(guint64) G_GINT64_CONSTANT (0x0000000000ff0000U)) << 24) | \
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(((guint64) (val) & \
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(guint64) G_GINT64_CONSTANT (0x00000000ff000000U)) << 8) | \
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(((guint64) (val) & \
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(guint64) G_GINT64_CONSTANT (0x000000ff00000000U)) >> 8) | \
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(((guint64) (val) & \
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(guint64) G_GINT64_CONSTANT (0x0000ff0000000000U)) >> 24) | \
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(((guint64) (val) & \
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(guint64) G_GINT64_CONSTANT (0x00ff000000000000U)) >> 40) | \
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(((guint64) (val) & \
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(guint64) G_GINT64_CONSTANT (0xff00000000000000U)) >> 56)))
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/* Arch specific stuff for speed
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*/
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#if defined (__GNUC__) && (__GNUC__ >= 2) && defined (__OPTIMIZE__)
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# if defined (__i386__)
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# define GUINT16_SWAP_LE_BE_IA32(val) \
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(__extension__ \
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({ register guint16 __v, __x = ((guint16) (val)); \
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if (__builtin_constant_p (__x)) \
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__v = GUINT16_SWAP_LE_BE_CONSTANT (__x); \
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else \
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__asm__ ("rorw $8, %w0" \
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: "=r" (__v) \
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: "0" (__x) \
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: "cc"); \
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__v; }))
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# if !defined (__i486__) && !defined (__i586__) \
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&& !defined (__pentium__) && !defined (__i686__) \
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&& !defined (__pentiumpro__) && !defined (__pentium4__)
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# define GUINT32_SWAP_LE_BE_IA32(val) \
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(__extension__ \
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({ register guint32 __v, __x = ((guint32) (val)); \
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if (__builtin_constant_p (__x)) \
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__v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \
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else \
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__asm__ ("rorw $8, %w0\n\t" \
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"rorl $16, %0\n\t" \
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"rorw $8, %w0" \
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: "=r" (__v) \
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: "0" (__x) \
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: "cc"); \
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__v; }))
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# else /* 486 and higher has bswap */
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# define GUINT32_SWAP_LE_BE_IA32(val) \
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(__extension__ \
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({ register guint32 __v, __x = ((guint32) (val)); \
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if (__builtin_constant_p (__x)) \
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__v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \
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else \
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__asm__ ("bswap %0" \
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: "=r" (__v) \
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: "0" (__x)); \
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__v; }))
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# endif /* processor specific 32-bit stuff */
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# define GUINT64_SWAP_LE_BE_IA32(val) \
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(__extension__ \
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({ union { guint64 __ll; \
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guint32 __l[2]; } __w, __r; \
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__w.__ll = ((guint64) (val)); \
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if (__builtin_constant_p (__w.__ll)) \
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__r.__ll = GUINT64_SWAP_LE_BE_CONSTANT (__w.__ll); \
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else \
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{ \
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__r.__l[0] = GUINT32_SWAP_LE_BE (__w.__l[1]); \
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__r.__l[1] = GUINT32_SWAP_LE_BE (__w.__l[0]); \
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} \
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__r.__ll; }))
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/* Possibly just use the constant version and let gcc figure it out? */
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# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_IA32 (val))
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# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_IA32 (val))
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# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_IA32 (val))
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# elif defined (__ia64__)
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# define GUINT16_SWAP_LE_BE_IA64(val) \
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(__extension__ \
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({ register guint16 __v, __x = ((guint16) (val)); \
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if (__builtin_constant_p (__x)) \
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__v = GUINT16_SWAP_LE_BE_CONSTANT (__x); \
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else \
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__asm__ __volatile__ ("shl %0 = %1, 48 ;;" \
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"mux1 %0 = %0, @rev ;;" \
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: "=r" (__v) \
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: "r" (__x)); \
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__v; }))
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# define GUINT32_SWAP_LE_BE_IA64(val) \
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(__extension__ \
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({ register guint32 __v, __x = ((guint32) (val)); \
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if (__builtin_constant_p (__x)) \
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__v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \
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else \
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__asm__ __volatile__ ("shl %0 = %1, 32 ;;" \
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"mux1 %0 = %0, @rev ;;" \
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: "=r" (__v) \
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: "r" (__x)); \
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__v; }))
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# define GUINT64_SWAP_LE_BE_IA64(val) \
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(__extension__ \
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({ register guint64 __v, __x = ((guint64) (val)); \
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if (__builtin_constant_p (__x)) \
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__v = GUINT64_SWAP_LE_BE_CONSTANT (__x); \
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else \
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__asm__ __volatile__ ("mux1 %0 = %1, @rev ;;" \
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: "=r" (__v) \
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: "r" (__x)); \
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__v; }))
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# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_IA64 (val))
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# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_IA64 (val))
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# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_IA64 (val))
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# elif defined (__x86_64__)
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# define GUINT32_SWAP_LE_BE_X86_64(val) \
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(__extension__ \
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({ register guint32 __v, __x = ((guint32) (val)); \
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if (__builtin_constant_p (__x)) \
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__v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \
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else \
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__asm__ ("bswapl %0" \
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: "=r" (__v) \
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: "0" (__x)); \
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__v; }))
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# define GUINT64_SWAP_LE_BE_X86_64(val) \
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(__extension__ \
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({ register guint64 __v, __x = ((guint64) (val)); \
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if (__builtin_constant_p (__x)) \
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__v = GUINT64_SWAP_LE_BE_CONSTANT (__x); \
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else \
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__asm__ ("bswapq %0" \
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: "=r" (__v) \
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: "0" (__x)); \
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__v; }))
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/* gcc seems to figure out optimal code for this on its own */
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# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val))
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# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_X86_64 (val))
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# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_X86_64 (val))
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# else /* generic gcc */
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# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val))
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# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val))
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# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT (val))
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# endif
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#else /* generic */
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# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val))
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# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val))
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# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT (val))
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#endif /* generic */
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#define GUINT16_SWAP_LE_PDP(val) ((guint16) (val))
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#define GUINT16_SWAP_BE_PDP(val) (GUINT16_SWAP_LE_BE (val))
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#define GUINT32_SWAP_LE_PDP(val) ((guint32) ( \
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(((guint32) (val) & (guint32) 0x0000ffffU) << 16) | \
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(((guint32) (val) & (guint32) 0xffff0000U) >> 16)))
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#define GUINT32_SWAP_BE_PDP(val) ((guint32) ( \
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(((guint32) (val) & (guint32) 0x00ff00ffU) << 8) | \
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(((guint32) (val) & (guint32) 0xff00ff00U) >> 8)))
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/* The G*_TO_?E() macros are defined in glibconfig.h.
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* The transformation is symmetric, so the FROM just maps to the TO.
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*/
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#define GINT16_FROM_LE(val) (GINT16_TO_LE (val))
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#define GUINT16_FROM_LE(val) (GUINT16_TO_LE (val))
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#define GINT16_FROM_BE(val) (GINT16_TO_BE (val))
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#define GUINT16_FROM_BE(val) (GUINT16_TO_BE (val))
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#define GINT32_FROM_LE(val) (GINT32_TO_LE (val))
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#define GUINT32_FROM_LE(val) (GUINT32_TO_LE (val))
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#define GINT32_FROM_BE(val) (GINT32_TO_BE (val))
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#define GUINT32_FROM_BE(val) (GUINT32_TO_BE (val))
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#define GINT64_FROM_LE(val) (GINT64_TO_LE (val))
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#define GUINT64_FROM_LE(val) (GUINT64_TO_LE (val))
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#define GINT64_FROM_BE(val) (GINT64_TO_BE (val))
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#define GUINT64_FROM_BE(val) (GUINT64_TO_BE (val))
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#define GLONG_FROM_LE(val) (GLONG_TO_LE (val))
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#define GULONG_FROM_LE(val) (GULONG_TO_LE (val))
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#define GLONG_FROM_BE(val) (GLONG_TO_BE (val))
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#define GULONG_FROM_BE(val) (GULONG_TO_BE (val))
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#define GINT_FROM_LE(val) (GINT_TO_LE (val))
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#define GUINT_FROM_LE(val) (GUINT_TO_LE (val))
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#define GINT_FROM_BE(val) (GINT_TO_BE (val))
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#define GUINT_FROM_BE(val) (GUINT_TO_BE (val))
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#define GSIZE_FROM_LE(val) (GSIZE_TO_LE (val))
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#define GSSIZE_FROM_LE(val) (GSSIZE_TO_LE (val))
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#define GSIZE_FROM_BE(val) (GSIZE_TO_BE (val))
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#define GSSIZE_FROM_BE(val) (GSSIZE_TO_BE (val))
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/* Portable versions of host-network order stuff
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*/
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#define g_ntohl(val) (GUINT32_FROM_BE (val))
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#define g_ntohs(val) (GUINT16_FROM_BE (val))
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#define g_htonl(val) (GUINT32_TO_BE (val))
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#define g_htons(val) (GUINT16_TO_BE (val))
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/* IEEE Standard 754 Single Precision Storage Format (gfloat):
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*
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* 31 30 23 22 0
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* +--------+---------------+---------------+
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* | s 1bit | e[30:23] 8bit | f[22:0] 23bit |
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* +--------+---------------+---------------+
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* B0------------------->B1------->B2-->B3-->
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*
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* IEEE Standard 754 Double Precision Storage Format (gdouble):
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*
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* 63 62 52 51 32 31 0
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* +--------+----------------+----------------+ +---------------+
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* | s 1bit | e[62:52] 11bit | f[51:32] 20bit | | f[31:0] 32bit |
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* +--------+----------------+----------------+ +---------------+
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* B0--------------->B1---------->B2--->B3----> B4->B5->B6->B7->
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*/
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/* subtract from biased_exponent to form base2 exponent (normal numbers) */
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typedef union _GDoubleIEEE754 GDoubleIEEE754;
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typedef union _GFloatIEEE754 GFloatIEEE754;
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#define G_IEEE754_FLOAT_BIAS (127)
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#define G_IEEE754_DOUBLE_BIAS (1023)
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/* multiply with base2 exponent to get base10 exponent (normal numbers) */
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#define G_LOG_2_BASE_10 (0.30102999566398119521)
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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union _GFloatIEEE754
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{
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gfloat v_float;
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struct {
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guint mantissa : 23;
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guint biased_exponent : 8;
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guint sign : 1;
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} mpn;
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};
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union _GDoubleIEEE754
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{
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gdouble v_double;
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struct {
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guint mantissa_low : 32;
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guint mantissa_high : 20;
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guint biased_exponent : 11;
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guint sign : 1;
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} mpn;
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};
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#elif G_BYTE_ORDER == G_BIG_ENDIAN
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union _GFloatIEEE754
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{
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gfloat v_float;
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struct {
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guint sign : 1;
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guint biased_exponent : 8;
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guint mantissa : 23;
|
|
} mpn;
|
|
};
|
|
union _GDoubleIEEE754
|
|
{
|
|
gdouble v_double;
|
|
struct {
|
|
guint sign : 1;
|
|
guint biased_exponent : 11;
|
|
guint mantissa_high : 20;
|
|
guint mantissa_low : 32;
|
|
} mpn;
|
|
};
|
|
#else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
|
|
#error unknown ENDIAN type
|
|
#endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
|
|
|
|
typedef struct _GTimeVal GTimeVal;
|
|
|
|
struct _GTimeVal
|
|
{
|
|
glong tv_sec;
|
|
glong tv_usec;
|
|
};
|
|
|
|
G_END_DECLS
|
|
|
|
/* We prefix variable declarations so they can
|
|
* properly get exported in Windows DLLs.
|
|
*/
|
|
#ifndef GLIB_VAR
|
|
# ifdef G_PLATFORM_WIN32
|
|
# ifdef GLIB_STATIC_COMPILATION
|
|
# define GLIB_VAR extern
|
|
# else /* !GLIB_STATIC_COMPILATION */
|
|
# ifdef GLIB_COMPILATION
|
|
# ifdef DLL_EXPORT
|
|
# define GLIB_VAR __declspec(dllexport)
|
|
# else /* !DLL_EXPORT */
|
|
# define GLIB_VAR extern
|
|
# endif /* !DLL_EXPORT */
|
|
# else /* !GLIB_COMPILATION */
|
|
# define GLIB_VAR extern __declspec(dllimport)
|
|
# endif /* !GLIB_COMPILATION */
|
|
# endif /* !GLIB_STATIC_COMPILATION */
|
|
# else /* !G_PLATFORM_WIN32 */
|
|
# define GLIB_VAR extern
|
|
# endif /* !G_PLATFORM_WIN32 */
|
|
#endif /* GLIB_VAR */
|
|
|
|
#endif /* __G_TYPES_H__ */
|