| /* GLIB - Library of useful routines for C programming |
| * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
| * |
| * SPDX-License-Identifier: LGPL-2.1-or-later |
| * |
| * 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 2.1 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, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| /* |
| * 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/. |
| */ |
| |
| #ifndef __G_TYPES_H__ |
| #define __G_TYPES_H__ |
| |
| #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) |
| #error "Only <glib.h> can be included directly." |
| #endif |
| |
| #include <glibconfig.h> |
| #include <glib/gmacros.h> |
| #include <glib/gversionmacros.h> |
| |
| /* Must be included after the 3 headers above */ |
| #include <glib/glib-visibility.h> |
| |
| #include <time.h> |
| |
| G_BEGIN_DECLS |
| |
| /* Provide type definitions for commonly used types. |
| * These are useful because a "gint8" can be adjusted |
| * to be 1 byte (8 bits) on all platforms. Similarly and |
| * more importantly, "gint32" can be adjusted to be |
| * 4 bytes (32 bits) on all platforms. |
| */ |
| |
| typedef char gchar; |
| typedef short gshort; |
| typedef long glong; |
| typedef int gint; |
| typedef gint gboolean; |
| |
| typedef unsigned char guchar; |
| typedef unsigned short gushort; |
| typedef unsigned long gulong; |
| typedef unsigned int guint; |
| |
| typedef float gfloat; |
| typedef double gdouble; |
| |
| /* Define min and max constants for the fixed size numerical types */ |
| /** |
| * G_MININT8: (value -128) |
| * |
| * The minimum value which can be held in a #gint8. |
| * |
| * Since: 2.4 |
| */ |
| #define G_MININT8 ((gint8) (-G_MAXINT8 - 1)) |
| #define G_MAXINT8 ((gint8) 0x7f) |
| #define G_MAXUINT8 ((guint8) 0xff) |
| |
| /** |
| * G_MININT16: (value -32768) |
| * |
| * The minimum value which can be held in a #gint16. |
| * |
| * Since: 2.4 |
| */ |
| #define G_MININT16 ((gint16) (-G_MAXINT16 - 1)) |
| #define G_MAXINT16 ((gint16) 0x7fff) |
| #define G_MAXUINT16 ((guint16) 0xffff) |
| |
| /** |
| * G_MININT32: (value -2147483648) |
| * |
| * The minimum value which can be held in a #gint32. |
| * |
| * Since: 2.4 |
| */ |
| #define G_MININT32 ((gint32) (-G_MAXINT32 - 1)) |
| #define G_MAXINT32 ((gint32) 0x7fffffff) |
| #define G_MAXUINT32 ((guint32) 0xffffffff) |
| |
| /** |
| * G_MININT64: (value -9223372036854775808) |
| * |
| * The minimum value which can be held in a #gint64. |
| */ |
| #define G_MININT64 ((gint64) (-G_MAXINT64 - G_GINT64_CONSTANT(1))) |
| #define G_MAXINT64 G_GINT64_CONSTANT(0x7fffffffffffffff) |
| #define G_MAXUINT64 G_GUINT64_CONSTANT(0xffffffffffffffff) |
| |
| typedef void* gpointer; |
| typedef const void *gconstpointer; |
| |
| typedef gint (*GCompareFunc) (gconstpointer a, |
| gconstpointer b); |
| typedef gint (*GCompareDataFunc) (gconstpointer a, |
| gconstpointer b, |
| gpointer user_data); |
| typedef gboolean (*GEqualFunc) (gconstpointer a, |
| gconstpointer b); |
| |
| /** |
| * GEqualFuncFull: |
| * @a: a value |
| * @b: a value to compare with |
| * @user_data: user data provided by the caller |
| * |
| * Specifies the type of a function used to test two values for |
| * equality. The function should return %TRUE if both values are equal |
| * and %FALSE otherwise. |
| * |
| * This is a version of #GEqualFunc which provides a @user_data closure from |
| * the caller. |
| * |
| * Returns: %TRUE if @a = @b; %FALSE otherwise |
| * Since: 2.74 |
| */ |
| typedef gboolean (*GEqualFuncFull) (gconstpointer a, |
| gconstpointer b, |
| gpointer user_data); |
| |
| typedef void (*GDestroyNotify) (gpointer data); |
| typedef void (*GFunc) (gpointer data, |
| gpointer user_data); |
| typedef guint (*GHashFunc) (gconstpointer key); |
| typedef void (*GHFunc) (gpointer key, |
| gpointer value, |
| gpointer user_data); |
| |
| /** |
| * GCopyFunc: |
| * @src: (not nullable): A pointer to the data which should be copied |
| * @data: Additional data |
| * |
| * A function of this signature is used to copy the node data |
| * when doing a deep-copy of a tree. |
| * |
| * Returns: (not nullable): A pointer to the copy |
| * |
| * Since: 2.4 |
| */ |
| typedef gpointer (*GCopyFunc) (gconstpointer src, |
| gpointer data); |
| /** |
| * GFreeFunc: |
| * @data: a data pointer |
| * |
| * Declares a type of function which takes an arbitrary |
| * data pointer argument and has no return value. It is |
| * not currently used in GLib or GTK. |
| */ |
| typedef void (*GFreeFunc) (gpointer data); |
| |
| /** |
| * GTranslateFunc: |
| * @str: the untranslated string |
| * @data: user data specified when installing the function, e.g. |
| * in g_option_group_set_translate_func() |
| * |
| * The type of functions which are used to translate user-visible |
| * strings, for <option>--help</option> output. |
| * |
| * Returns: a translation of the string for the current locale. |
| * The returned string is owned by GLib and must not be freed. |
| */ |
| typedef const gchar * (*GTranslateFunc) (const gchar *str, |
| gpointer data); |
| |
| |
| /* Define some mathematical constants that aren't available |
| * symbolically in some strict ISO C implementations. |
| * |
| * Note that the large number of digits used in these definitions |
| * doesn't imply that GLib or current computers in general would be |
| * able to handle floating point numbers with an accuracy like this. |
| * It's mostly an exercise in futility and future proofing. For |
| * extended precision floating point support, look somewhere else |
| * than GLib. |
| */ |
| #define G_E 2.7182818284590452353602874713526624977572470937000 |
| #define G_LN2 0.69314718055994530941723212145817656807550013436026 |
| #define G_LN10 2.3025850929940456840179914546843642076011014886288 |
| #define G_PI 3.1415926535897932384626433832795028841971693993751 |
| #define G_PI_2 1.5707963267948966192313216916397514420985846996876 |
| #define G_PI_4 0.78539816339744830961566084581987572104929234984378 |
| #define G_SQRT2 1.4142135623730950488016887242096980785696718753769 |
| |
| /* Portable endian checks and conversions |
| * |
| * glibconfig.h defines G_BYTE_ORDER which expands to one of |
| * the below macros. |
| */ |
| #define G_LITTLE_ENDIAN 1234 |
| #define G_BIG_ENDIAN 4321 |
| #define G_PDP_ENDIAN 3412 /* unused, need specific PDP check */ |
| |
| |
| /* Basic bit swapping functions |
| */ |
| #define GUINT16_SWAP_LE_BE_CONSTANT(val) ((guint16) ( \ |
| (guint16) ((guint16) (val) >> 8) | \ |
| (guint16) ((guint16) (val) << 8))) |
| |
| #define GUINT32_SWAP_LE_BE_CONSTANT(val) ((guint32) ( \ |
| (((guint32) (val) & (guint32) 0x000000ffU) << 24) | \ |
| (((guint32) (val) & (guint32) 0x0000ff00U) << 8) | \ |
| (((guint32) (val) & (guint32) 0x00ff0000U) >> 8) | \ |
| (((guint32) (val) & (guint32) 0xff000000U) >> 24))) |
| |
| #define GUINT64_SWAP_LE_BE_CONSTANT(val) ((guint64) ( \ |
| (((guint64) (val) & \ |
| (guint64) G_GINT64_CONSTANT (0x00000000000000ffU)) << 56) | \ |
| (((guint64) (val) & \ |
| (guint64) G_GINT64_CONSTANT (0x000000000000ff00U)) << 40) | \ |
| (((guint64) (val) & \ |
| (guint64) G_GINT64_CONSTANT (0x0000000000ff0000U)) << 24) | \ |
| (((guint64) (val) & \ |
| (guint64) G_GINT64_CONSTANT (0x00000000ff000000U)) << 8) | \ |
| (((guint64) (val) & \ |
| (guint64) G_GINT64_CONSTANT (0x000000ff00000000U)) >> 8) | \ |
| (((guint64) (val) & \ |
| (guint64) G_GINT64_CONSTANT (0x0000ff0000000000U)) >> 24) | \ |
| (((guint64) (val) & \ |
| (guint64) G_GINT64_CONSTANT (0x00ff000000000000U)) >> 40) | \ |
| (((guint64) (val) & \ |
| (guint64) G_GINT64_CONSTANT (0xff00000000000000U)) >> 56))) |
| |
| /* Arch specific stuff for speed |
| */ |
| #if defined (__GNUC__) && (__GNUC__ >= 2) && defined (__OPTIMIZE__) |
| |
| # if __GNUC__ >= 4 && defined (__GNUC_MINOR__) && __GNUC_MINOR__ >= 3 |
| # define GUINT32_SWAP_LE_BE(val) ((guint32) __builtin_bswap32 ((guint32) (val))) |
| # define GUINT64_SWAP_LE_BE(val) ((guint64) __builtin_bswap64 ((guint64) (val))) |
| # endif |
| |
| # if defined (__i386__) |
| # define GUINT16_SWAP_LE_BE_IA32(val) \ |
| (G_GNUC_EXTENSION \ |
| ({ guint16 __v, __x = ((guint16) (val)); \ |
| if (__builtin_constant_p (__x)) \ |
| __v = GUINT16_SWAP_LE_BE_CONSTANT (__x); \ |
| else \ |
| __asm__ ("rorw $8, %w0" \ |
| : "=r" (__v) \ |
| : "0" (__x) \ |
| : "cc"); \ |
| __v; })) |
| # if !defined (__i486__) && !defined (__i586__) \ |
| && !defined (__pentium__) && !defined (__i686__) \ |
| && !defined (__pentiumpro__) && !defined (__pentium4__) |
| # define GUINT32_SWAP_LE_BE_IA32(val) \ |
| (G_GNUC_EXTENSION \ |
| ({ guint32 __v, __x = ((guint32) (val)); \ |
| if (__builtin_constant_p (__x)) \ |
| __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \ |
| else \ |
| __asm__ ("rorw $8, %w0\n\t" \ |
| "rorl $16, %0\n\t" \ |
| "rorw $8, %w0" \ |
| : "=r" (__v) \ |
| : "0" (__x) \ |
| : "cc"); \ |
| __v; })) |
| # else /* 486 and higher has bswap */ |
| # define GUINT32_SWAP_LE_BE_IA32(val) \ |
| (G_GNUC_EXTENSION \ |
| ({ guint32 __v, __x = ((guint32) (val)); \ |
| if (__builtin_constant_p (__x)) \ |
| __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \ |
| else \ |
| __asm__ ("bswap %0" \ |
| : "=r" (__v) \ |
| : "0" (__x)); \ |
| __v; })) |
| # endif /* processor specific 32-bit stuff */ |
| # define GUINT64_SWAP_LE_BE_IA32(val) \ |
| (G_GNUC_EXTENSION \ |
| ({ union { guint64 __ll; \ |
| guint32 __l[2]; } __w, __r; \ |
| __w.__ll = ((guint64) (val)); \ |
| if (__builtin_constant_p (__w.__ll)) \ |
| __r.__ll = GUINT64_SWAP_LE_BE_CONSTANT (__w.__ll); \ |
| else \ |
| { \ |
| __r.__l[0] = GUINT32_SWAP_LE_BE (__w.__l[1]); \ |
| __r.__l[1] = GUINT32_SWAP_LE_BE (__w.__l[0]); \ |
| } \ |
| __r.__ll; })) |
| /* Possibly just use the constant version and let gcc figure it out? */ |
| # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_IA32 (val)) |
| # ifndef GUINT32_SWAP_LE_BE |
| # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_IA32 (val)) |
| # endif |
| # ifndef GUINT64_SWAP_LE_BE |
| # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_IA32 (val)) |
| # endif |
| # elif defined (__ia64__) |
| # define GUINT16_SWAP_LE_BE_IA64(val) \ |
| (G_GNUC_EXTENSION \ |
| ({ guint16 __v, __x = ((guint16) (val)); \ |
| if (__builtin_constant_p (__x)) \ |
| __v = GUINT16_SWAP_LE_BE_CONSTANT (__x); \ |
| else \ |
| __asm__ __volatile__ ("shl %0 = %1, 48 ;;" \ |
| "mux1 %0 = %0, @rev ;;" \ |
| : "=r" (__v) \ |
| : "r" (__x)); \ |
| __v; })) |
| # define GUINT32_SWAP_LE_BE_IA64(val) \ |
| (G_GNUC_EXTENSION \ |
| ({ guint32 __v, __x = ((guint32) (val)); \ |
| if (__builtin_constant_p (__x)) \ |
| __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \ |
| else \ |
| __asm__ __volatile__ ("shl %0 = %1, 32 ;;" \ |
| "mux1 %0 = %0, @rev ;;" \ |
| : "=r" (__v) \ |
| : "r" (__x)); \ |
| __v; })) |
| # define GUINT64_SWAP_LE_BE_IA64(val) \ |
| (G_GNUC_EXTENSION \ |
| ({ guint64 __v, __x = ((guint64) (val)); \ |
| if (__builtin_constant_p (__x)) \ |
| __v = GUINT64_SWAP_LE_BE_CONSTANT (__x); \ |
| else \ |
| __asm__ __volatile__ ("mux1 %0 = %1, @rev ;;" \ |
| : "=r" (__v) \ |
| : "r" (__x)); \ |
| __v; })) |
| # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_IA64 (val)) |
| # ifndef GUINT32_SWAP_LE_BE |
| # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_IA64 (val)) |
| # endif |
| # ifndef GUINT64_SWAP_LE_BE |
| # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_IA64 (val)) |
| # endif |
| # elif defined (__x86_64__) |
| # define GUINT32_SWAP_LE_BE_X86_64(val) \ |
| (G_GNUC_EXTENSION \ |
| ({ guint32 __v, __x = ((guint32) (val)); \ |
| if (__builtin_constant_p (__x)) \ |
| __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \ |
| else \ |
| __asm__ ("bswapl %0" \ |
| : "=r" (__v) \ |
| : "0" (__x)); \ |
| __v; })) |
| # define GUINT64_SWAP_LE_BE_X86_64(val) \ |
| (G_GNUC_EXTENSION \ |
| ({ guint64 __v, __x = ((guint64) (val)); \ |
| if (__builtin_constant_p (__x)) \ |
| __v = GUINT64_SWAP_LE_BE_CONSTANT (__x); \ |
| else \ |
| __asm__ ("bswapq %0" \ |
| : "=r" (__v) \ |
| : "0" (__x)); \ |
| __v; })) |
| /* gcc seems to figure out optimal code for this on its own */ |
| # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val)) |
| # ifndef GUINT32_SWAP_LE_BE |
| # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_X86_64 (val)) |
| # endif |
| # ifndef GUINT64_SWAP_LE_BE |
| # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_X86_64 (val)) |
| # endif |
| # else /* generic gcc */ |
| # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val)) |
| # ifndef GUINT32_SWAP_LE_BE |
| # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val)) |
| # endif |
| # ifndef GUINT64_SWAP_LE_BE |
| # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT (val)) |
| # endif |
| # endif |
| #else /* generic */ |
| # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val)) |
| # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val)) |
| # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT (val)) |
| #endif /* generic */ |
| |
| #define GUINT16_SWAP_LE_PDP(val) ((guint16) (val)) |
| #define GUINT16_SWAP_BE_PDP(val) (GUINT16_SWAP_LE_BE (val)) |
| #define GUINT32_SWAP_LE_PDP(val) ((guint32) ( \ |
| (((guint32) (val) & (guint32) 0x0000ffffU) << 16) | \ |
| (((guint32) (val) & (guint32) 0xffff0000U) >> 16))) |
| #define GUINT32_SWAP_BE_PDP(val) ((guint32) ( \ |
| (((guint32) (val) & (guint32) 0x00ff00ffU) << 8) | \ |
| (((guint32) (val) & (guint32) 0xff00ff00U) >> 8))) |
| |
| /* The G*_TO_?E() macros are defined in glibconfig.h. |
| * The transformation is symmetric, so the FROM just maps to the TO. |
| */ |
| #define GINT16_FROM_LE(val) (GINT16_TO_LE (val)) |
| #define GUINT16_FROM_LE(val) (GUINT16_TO_LE (val)) |
| #define GINT16_FROM_BE(val) (GINT16_TO_BE (val)) |
| #define GUINT16_FROM_BE(val) (GUINT16_TO_BE (val)) |
| #define GINT32_FROM_LE(val) (GINT32_TO_LE (val)) |
| #define GUINT32_FROM_LE(val) (GUINT32_TO_LE (val)) |
| #define GINT32_FROM_BE(val) (GINT32_TO_BE (val)) |
| #define GUINT32_FROM_BE(val) (GUINT32_TO_BE (val)) |
| |
| #define GINT64_FROM_LE(val) (GINT64_TO_LE (val)) |
| #define GUINT64_FROM_LE(val) (GUINT64_TO_LE (val)) |
| #define GINT64_FROM_BE(val) (GINT64_TO_BE (val)) |
| #define GUINT64_FROM_BE(val) (GUINT64_TO_BE (val)) |
| |
| #define GLONG_FROM_LE(val) (GLONG_TO_LE (val)) |
| #define GULONG_FROM_LE(val) (GULONG_TO_LE (val)) |
| #define GLONG_FROM_BE(val) (GLONG_TO_BE (val)) |
| #define GULONG_FROM_BE(val) (GULONG_TO_BE (val)) |
| |
| #define GINT_FROM_LE(val) (GINT_TO_LE (val)) |
| #define GUINT_FROM_LE(val) (GUINT_TO_LE (val)) |
| #define GINT_FROM_BE(val) (GINT_TO_BE (val)) |
| #define GUINT_FROM_BE(val) (GUINT_TO_BE (val)) |
| |
| #define GSIZE_FROM_LE(val) (GSIZE_TO_LE (val)) |
| #define GSSIZE_FROM_LE(val) (GSSIZE_TO_LE (val)) |
| #define GSIZE_FROM_BE(val) (GSIZE_TO_BE (val)) |
| #define GSSIZE_FROM_BE(val) (GSSIZE_TO_BE (val)) |
| |
| /* Portable versions of host-network order stuff |
| */ |
| #define g_ntohl(val) (GUINT32_FROM_BE (val)) |
| #define g_ntohs(val) (GUINT16_FROM_BE (val)) |
| #define g_htonl(val) (GUINT32_TO_BE (val)) |
| #define g_htons(val) (GUINT16_TO_BE (val)) |
| |
| /* Overflow-checked unsigned integer arithmetic |
| */ |
| #ifndef _GLIB_TEST_OVERFLOW_FALLBACK |
| /* https://bugzilla.gnome.org/show_bug.cgi?id=769104 */ |
| #if __GNUC__ >= 5 && !defined(__INTEL_COMPILER) |
| #define _GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS |
| #elif g_macro__has_builtin(__builtin_add_overflow) |
| #define _GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS |
| #endif |
| #endif |
| |
| #ifdef _GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS |
| |
| #define g_uint_checked_add(dest, a, b) \ |
| (!__builtin_add_overflow(a, b, dest)) |
| #define g_uint_checked_mul(dest, a, b) \ |
| (!__builtin_mul_overflow(a, b, dest)) |
| |
| #define g_uint64_checked_add(dest, a, b) \ |
| (!__builtin_add_overflow(a, b, dest)) |
| #define g_uint64_checked_mul(dest, a, b) \ |
| (!__builtin_mul_overflow(a, b, dest)) |
| |
| #define g_size_checked_add(dest, a, b) \ |
| (!__builtin_add_overflow(a, b, dest)) |
| #define g_size_checked_mul(dest, a, b) \ |
| (!__builtin_mul_overflow(a, b, dest)) |
| |
| #else /* !_GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS */ |
| |
| /* The names of the following inlines are private. Use the macro |
| * definitions above. |
| */ |
| static inline gboolean _GLIB_CHECKED_ADD_UINT (guint *dest, guint a, guint b) { |
| *dest = a + b; return *dest >= a; } |
| static inline gboolean _GLIB_CHECKED_MUL_UINT (guint *dest, guint a, guint b) { |
| *dest = a * b; return !a || *dest / a == b; } |
| static inline gboolean _GLIB_CHECKED_ADD_UINT64 (guint64 *dest, guint64 a, guint64 b) { |
| *dest = a + b; return *dest >= a; } |
| static inline gboolean _GLIB_CHECKED_MUL_UINT64 (guint64 *dest, guint64 a, guint64 b) { |
| *dest = a * b; return !a || *dest / a == b; } |
| static inline gboolean _GLIB_CHECKED_ADD_SIZE (gsize *dest, gsize a, gsize b) { |
| *dest = a + b; return *dest >= a; } |
| static inline gboolean _GLIB_CHECKED_MUL_SIZE (gsize *dest, gsize a, gsize b) { |
| *dest = a * b; return !a || *dest / a == b; } |
| |
| #define g_uint_checked_add(dest, a, b) \ |
| _GLIB_CHECKED_ADD_UINT(dest, a, b) |
| #define g_uint_checked_mul(dest, a, b) \ |
| _GLIB_CHECKED_MUL_UINT(dest, a, b) |
| |
| #define g_uint64_checked_add(dest, a, b) \ |
| _GLIB_CHECKED_ADD_UINT64(dest, a, b) |
| #define g_uint64_checked_mul(dest, a, b) \ |
| _GLIB_CHECKED_MUL_UINT64(dest, a, b) |
| |
| #define g_size_checked_add(dest, a, b) \ |
| _GLIB_CHECKED_ADD_SIZE(dest, a, b) |
| #define g_size_checked_mul(dest, a, b) \ |
| _GLIB_CHECKED_MUL_SIZE(dest, a, b) |
| |
| #endif /* !_GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS */ |
| |
| /* IEEE Standard 754 Single Precision Storage Format (gfloat): |
| * |
| * 31 30 23 22 0 |
| * +--------+---------------+---------------+ |
| * | s 1bit | e[30:23] 8bit | f[22:0] 23bit | |
| * +--------+---------------+---------------+ |
| * B0------------------->B1------->B2-->B3--> |
| * |
| * IEEE Standard 754 Double Precision Storage Format (gdouble): |
| * |
| * 63 62 52 51 32 31 0 |
| * +--------+----------------+----------------+ +---------------+ |
| * | s 1bit | e[62:52] 11bit | f[51:32] 20bit | | f[31:0] 32bit | |
| * +--------+----------------+----------------+ +---------------+ |
| * B0--------------->B1---------->B2--->B3----> B4->B5->B6->B7-> |
| */ |
| /* subtract from biased_exponent to form base2 exponent (normal numbers) */ |
| typedef union _GDoubleIEEE754 GDoubleIEEE754; |
| typedef union _GFloatIEEE754 GFloatIEEE754; |
| #define G_IEEE754_FLOAT_BIAS (127) |
| #define G_IEEE754_DOUBLE_BIAS (1023) |
| /* multiply with base2 exponent to get base10 exponent (normal numbers) */ |
| #define G_LOG_2_BASE_10 (0.30102999566398119521) |
| #if G_BYTE_ORDER == G_LITTLE_ENDIAN |
| union _GFloatIEEE754 |
| { |
| gfloat v_float; |
| struct { |
| guint mantissa : 23; |
| guint biased_exponent : 8; |
| guint sign : 1; |
| } mpn; |
| }; |
| union _GDoubleIEEE754 |
| { |
| gdouble v_double; |
| struct { |
| guint mantissa_low : 32; |
| guint mantissa_high : 20; |
| guint biased_exponent : 11; |
| guint sign : 1; |
| } mpn; |
| }; |
| #elif G_BYTE_ORDER == G_BIG_ENDIAN |
| union _GFloatIEEE754 |
| { |
| gfloat v_float; |
| struct { |
| guint sign : 1; |
| guint biased_exponent : 8; |
| 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 GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime); |
| |
| struct _GTimeVal |
| { |
| glong tv_sec; |
| glong tv_usec; |
| } GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime); |
| |
| typedef gint grefcount; |
| typedef gint gatomicrefcount; /* should be accessed only using atomics */ |
| |
| G_END_DECLS |
| |
| #endif /* __G_TYPES_H__ */ |