author | hgs |
Thu, 14 Oct 2010 14:15:50 +0530 | |
changeset 72 | 403e7f6ed6c5 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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/* 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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/* |
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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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#ifndef __G_TYPES_H__ |
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#define __G_TYPES_H__ |
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#include <glibconfig.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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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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#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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104 |
|
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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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113 |
|
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114 |
|
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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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120 |
|
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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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126 |
|
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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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144 |
|
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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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|
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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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|
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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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|
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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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|
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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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|
307 |
|
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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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|
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|
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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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320 |
|
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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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330 |
* |
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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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355 |
{ |
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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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366 |
{ |
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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; |
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} mpn; |
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373 |
}; |
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union _GDoubleIEEE754 |
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375 |
{ |
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gdouble v_double; |
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struct { |
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guint sign : 1; |
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guint biased_exponent : 11; |
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guint mantissa_high : 20; |
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guint mantissa_low : 32; |
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|
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} mpn; |
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383 |
}; |
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|
384 |
#else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ |
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|
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#error unknown ENDIAN type |
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|
386 |
#endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ |
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|
387 |
|
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|
388 |
typedef struct _GTimeVal GTimeVal; |
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|
389 |
|
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struct _GTimeVal |
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391 |
{ |
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|
392 |
glong tv_sec; |
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glong tv_usec; |
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394 |
}; |
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|
395 |
|
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396 |
G_END_DECLS |
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|
397 |
|
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/* We prefix variable declarations so they can |
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* properly get exported in windows dlls. |
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*/ |
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#ifndef GLIB_VAR |
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# ifdef G_PLATFORM_WIN32 |
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# ifdef GLIB_STATIC_COMPILATION |
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# define GLIB_VAR extern |
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# else /* !GLIB_STATIC_COMPILATION */ |
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# ifdef GLIB_COMPILATION |
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# ifdef DLL_EXPORT |
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# define GLIB_VAR __declspec(dllexport) |
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# else /* !DLL_EXPORT */ |
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# define GLIB_VAR extern |
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# endif /* !DLL_EXPORT */ |
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# else /* !GLIB_COMPILATION */ |
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# define GLIB_VAR extern __declspec(dllimport) |
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# endif /* !GLIB_COMPILATION */ |
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# endif /* !GLIB_STATIC_COMPILATION */ |
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# else /* !G_PLATFORM_WIN32 */ |
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# define GLIB_VAR extern |
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# endif /* !G_PLATFORM_WIN32 */ |
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#endif /* GLIB_VAR */ |
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|
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#endif /* __G_TYPES_H__ */ |
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