1 | /* GLIB - Library of useful routines for C programming |
2 | * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
3 | * |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2.1 of the License, or (at your option) any later version. |
8 | * |
9 | * This library is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
16 | */ |
17 | |
18 | /* |
19 | * Modified by the GLib Team and others 1997-2000. See the AUTHORS |
20 | * file for a list of people on the GLib Team. See the ChangeLog |
21 | * files for a list of changes. These files are distributed with |
22 | * GLib at ftp://ftp.gtk.org/pub/gtk/. |
23 | */ |
24 | |
25 | #ifndef __G_TYPES_H__ |
26 | #define __G_TYPES_H__ |
27 | |
28 | #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION) |
29 | #error "Only <glib.h> can be included directly." |
30 | #endif |
31 | |
32 | #include <glibconfig.h> |
33 | #include <glib/gmacros.h> |
34 | #include <glib/gversionmacros.h> |
35 | #include <time.h> |
36 | |
37 | G_BEGIN_DECLS |
38 | |
39 | /* Provide type definitions for commonly used types. |
40 | * These are useful because a "gint8" can be adjusted |
41 | * to be 1 byte (8 bits) on all platforms. Similarly and |
42 | * more importantly, "gint32" can be adjusted to be |
43 | * 4 bytes (32 bits) on all platforms. |
44 | */ |
45 | |
46 | typedef char gchar; |
47 | typedef short gshort; |
48 | typedef long glong; |
49 | typedef int gint; |
50 | typedef gint gboolean; |
51 | |
52 | typedef unsigned char guchar; |
53 | typedef unsigned short gushort; |
54 | typedef unsigned long gulong; |
55 | typedef unsigned int guint; |
56 | |
57 | typedef float gfloat; |
58 | typedef double gdouble; |
59 | |
60 | /* Define min and max constants for the fixed size numerical types */ |
61 | /** |
62 | * G_MININT8: (value -128) |
63 | * |
64 | * The minimum value which can be held in a #gint8. |
65 | * |
66 | * Since: 2.4 |
67 | */ |
68 | #define G_MININT8 ((gint8) (-G_MAXINT8 - 1)) |
69 | #define G_MAXINT8 ((gint8) 0x7f) |
70 | #define G_MAXUINT8 ((guint8) 0xff) |
71 | |
72 | /** |
73 | * G_MININT16: (value -32768) |
74 | * |
75 | * The minimum value which can be held in a #gint16. |
76 | * |
77 | * Since: 2.4 |
78 | */ |
79 | #define G_MININT16 ((gint16) (-G_MAXINT16 - 1)) |
80 | #define G_MAXINT16 ((gint16) 0x7fff) |
81 | #define G_MAXUINT16 ((guint16) 0xffff) |
82 | |
83 | /** |
84 | * G_MININT32: (value -2147483648) |
85 | * |
86 | * The minimum value which can be held in a #gint32. |
87 | * |
88 | * Since: 2.4 |
89 | */ |
90 | #define G_MININT32 ((gint32) (-G_MAXINT32 - 1)) |
91 | #define G_MAXINT32 ((gint32) 0x7fffffff) |
92 | #define G_MAXUINT32 ((guint32) 0xffffffff) |
93 | |
94 | /** |
95 | * G_MININT64: (value -9223372036854775808) |
96 | * |
97 | * The minimum value which can be held in a #gint64. |
98 | */ |
99 | #define G_MININT64 ((gint64) (-G_MAXINT64 - G_GINT64_CONSTANT(1))) |
100 | #define G_MAXINT64 G_GINT64_CONSTANT(0x7fffffffffffffff) |
101 | #define G_MAXUINT64 G_GUINT64_CONSTANT(0xffffffffffffffff) |
102 | |
103 | typedef void* gpointer; |
104 | typedef const void *gconstpointer; |
105 | |
106 | typedef gint (*GCompareFunc) (gconstpointer a, |
107 | gconstpointer b); |
108 | typedef gint (*GCompareDataFunc) (gconstpointer a, |
109 | gconstpointer b, |
110 | gpointer user_data); |
111 | typedef gboolean (*GEqualFunc) (gconstpointer a, |
112 | gconstpointer b); |
113 | typedef void (*GDestroyNotify) (gpointer data); |
114 | typedef void (*GFunc) (gpointer data, |
115 | gpointer user_data); |
116 | typedef guint (*GHashFunc) (gconstpointer key); |
117 | typedef void (*GHFunc) (gpointer key, |
118 | gpointer value, |
119 | gpointer user_data); |
120 | |
121 | /** |
122 | * GCopyFunc: |
123 | * @src: (not nullable): A pointer to the data which should be copied |
124 | * @data: Additional data |
125 | * |
126 | * A function of this signature is used to copy the node data |
127 | * when doing a deep-copy of a tree. |
128 | * |
129 | * Returns: (not nullable): A pointer to the copy |
130 | * |
131 | * Since: 2.4 |
132 | */ |
133 | typedef gpointer (*GCopyFunc) (gconstpointer src, |
134 | gpointer data); |
135 | /** |
136 | * GFreeFunc: |
137 | * @data: a data pointer |
138 | * |
139 | * Declares a type of function which takes an arbitrary |
140 | * data pointer argument and has no return value. It is |
141 | * not currently used in GLib or GTK+. |
142 | */ |
143 | typedef void (*GFreeFunc) (gpointer data); |
144 | |
145 | /** |
146 | * GTranslateFunc: |
147 | * @str: the untranslated string |
148 | * @data: user data specified when installing the function, e.g. |
149 | * in g_option_group_set_translate_func() |
150 | * |
151 | * The type of functions which are used to translate user-visible |
152 | * strings, for <option>--help</option> output. |
153 | * |
154 | * Returns: a translation of the string for the current locale. |
155 | * The returned string is owned by GLib and must not be freed. |
156 | */ |
157 | typedef const gchar * (*GTranslateFunc) (const gchar *str, |
158 | gpointer data); |
159 | |
160 | |
161 | /* Define some mathematical constants that aren't available |
162 | * symbolically in some strict ISO C implementations. |
163 | * |
164 | * Note that the large number of digits used in these definitions |
165 | * doesn't imply that GLib or current computers in general would be |
166 | * able to handle floating point numbers with an accuracy like this. |
167 | * It's mostly an exercise in futility and future proofing. For |
168 | * extended precision floating point support, look somewhere else |
169 | * than GLib. |
170 | */ |
171 | #define G_E 2.7182818284590452353602874713526624977572470937000 |
172 | #define G_LN2 0.69314718055994530941723212145817656807550013436026 |
173 | #define G_LN10 2.3025850929940456840179914546843642076011014886288 |
174 | #define G_PI 3.1415926535897932384626433832795028841971693993751 |
175 | #define G_PI_2 1.5707963267948966192313216916397514420985846996876 |
176 | #define G_PI_4 0.78539816339744830961566084581987572104929234984378 |
177 | #define G_SQRT2 1.4142135623730950488016887242096980785696718753769 |
178 | |
179 | /* Portable endian checks and conversions |
180 | * |
181 | * glibconfig.h defines G_BYTE_ORDER which expands to one of |
182 | * the below macros. |
183 | */ |
184 | #define G_LITTLE_ENDIAN 1234 |
185 | #define G_BIG_ENDIAN 4321 |
186 | #define G_PDP_ENDIAN 3412 /* unused, need specific PDP check */ |
187 | |
188 | |
189 | /* Basic bit swapping functions |
190 | */ |
191 | #define GUINT16_SWAP_LE_BE_CONSTANT(val) ((guint16) ( \ |
192 | (guint16) ((guint16) (val) >> 8) | \ |
193 | (guint16) ((guint16) (val) << 8))) |
194 | |
195 | #define GUINT32_SWAP_LE_BE_CONSTANT(val) ((guint32) ( \ |
196 | (((guint32) (val) & (guint32) 0x000000ffU) << 24) | \ |
197 | (((guint32) (val) & (guint32) 0x0000ff00U) << 8) | \ |
198 | (((guint32) (val) & (guint32) 0x00ff0000U) >> 8) | \ |
199 | (((guint32) (val) & (guint32) 0xff000000U) >> 24))) |
200 | |
201 | #define GUINT64_SWAP_LE_BE_CONSTANT(val) ((guint64) ( \ |
202 | (((guint64) (val) & \ |
203 | (guint64) G_GINT64_CONSTANT (0x00000000000000ffU)) << 56) | \ |
204 | (((guint64) (val) & \ |
205 | (guint64) G_GINT64_CONSTANT (0x000000000000ff00U)) << 40) | \ |
206 | (((guint64) (val) & \ |
207 | (guint64) G_GINT64_CONSTANT (0x0000000000ff0000U)) << 24) | \ |
208 | (((guint64) (val) & \ |
209 | (guint64) G_GINT64_CONSTANT (0x00000000ff000000U)) << 8) | \ |
210 | (((guint64) (val) & \ |
211 | (guint64) G_GINT64_CONSTANT (0x000000ff00000000U)) >> 8) | \ |
212 | (((guint64) (val) & \ |
213 | (guint64) G_GINT64_CONSTANT (0x0000ff0000000000U)) >> 24) | \ |
214 | (((guint64) (val) & \ |
215 | (guint64) G_GINT64_CONSTANT (0x00ff000000000000U)) >> 40) | \ |
216 | (((guint64) (val) & \ |
217 | (guint64) G_GINT64_CONSTANT (0xff00000000000000U)) >> 56))) |
218 | |
219 | /* Arch specific stuff for speed |
220 | */ |
221 | #if defined (__GNUC__) && (__GNUC__ >= 2) && defined (__OPTIMIZE__) |
222 | |
223 | # if __GNUC__ >= 4 && defined (__GNUC_MINOR__) && __GNUC_MINOR__ >= 3 |
224 | # define GUINT32_SWAP_LE_BE(val) ((guint32) __builtin_bswap32 ((guint32) (val))) |
225 | # define GUINT64_SWAP_LE_BE(val) ((guint64) __builtin_bswap64 ((guint64) (val))) |
226 | # endif |
227 | |
228 | # if defined (__i386__) |
229 | # define GUINT16_SWAP_LE_BE_IA32(val) \ |
230 | (G_GNUC_EXTENSION \ |
231 | ({ guint16 __v, __x = ((guint16) (val)); \ |
232 | if (__builtin_constant_p (__x)) \ |
233 | __v = GUINT16_SWAP_LE_BE_CONSTANT (__x); \ |
234 | else \ |
235 | __asm__ ("rorw $8, %w0" \ |
236 | : "=r" (__v) \ |
237 | : "0" (__x) \ |
238 | : "cc"); \ |
239 | __v; })) |
240 | # if !defined (__i486__) && !defined (__i586__) \ |
241 | && !defined (__pentium__) && !defined (__i686__) \ |
242 | && !defined (__pentiumpro__) && !defined (__pentium4__) |
243 | # define GUINT32_SWAP_LE_BE_IA32(val) \ |
244 | (G_GNUC_EXTENSION \ |
245 | ({ guint32 __v, __x = ((guint32) (val)); \ |
246 | if (__builtin_constant_p (__x)) \ |
247 | __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \ |
248 | else \ |
249 | __asm__ ("rorw $8, %w0\n\t" \ |
250 | "rorl $16, %0\n\t" \ |
251 | "rorw $8, %w0" \ |
252 | : "=r" (__v) \ |
253 | : "0" (__x) \ |
254 | : "cc"); \ |
255 | __v; })) |
256 | # else /* 486 and higher has bswap */ |
257 | # define GUINT32_SWAP_LE_BE_IA32(val) \ |
258 | (G_GNUC_EXTENSION \ |
259 | ({ guint32 __v, __x = ((guint32) (val)); \ |
260 | if (__builtin_constant_p (__x)) \ |
261 | __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \ |
262 | else \ |
263 | __asm__ ("bswap %0" \ |
264 | : "=r" (__v) \ |
265 | : "0" (__x)); \ |
266 | __v; })) |
267 | # endif /* processor specific 32-bit stuff */ |
268 | # define GUINT64_SWAP_LE_BE_IA32(val) \ |
269 | (G_GNUC_EXTENSION \ |
270 | ({ union { guint64 __ll; \ |
271 | guint32 __l[2]; } __w, __r; \ |
272 | __w.__ll = ((guint64) (val)); \ |
273 | if (__builtin_constant_p (__w.__ll)) \ |
274 | __r.__ll = GUINT64_SWAP_LE_BE_CONSTANT (__w.__ll); \ |
275 | else \ |
276 | { \ |
277 | __r.__l[0] = GUINT32_SWAP_LE_BE (__w.__l[1]); \ |
278 | __r.__l[1] = GUINT32_SWAP_LE_BE (__w.__l[0]); \ |
279 | } \ |
280 | __r.__ll; })) |
281 | /* Possibly just use the constant version and let gcc figure it out? */ |
282 | # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_IA32 (val)) |
283 | # ifndef GUINT32_SWAP_LE_BE |
284 | # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_IA32 (val)) |
285 | # endif |
286 | # ifndef GUINT64_SWAP_LE_BE |
287 | # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_IA32 (val)) |
288 | # endif |
289 | # elif defined (__ia64__) |
290 | # define GUINT16_SWAP_LE_BE_IA64(val) \ |
291 | (G_GNUC_EXTENSION \ |
292 | ({ guint16 __v, __x = ((guint16) (val)); \ |
293 | if (__builtin_constant_p (__x)) \ |
294 | __v = GUINT16_SWAP_LE_BE_CONSTANT (__x); \ |
295 | else \ |
296 | __asm__ __volatile__ ("shl %0 = %1, 48 ;;" \ |
297 | "mux1 %0 = %0, @rev ;;" \ |
298 | : "=r" (__v) \ |
299 | : "r" (__x)); \ |
300 | __v; })) |
301 | # define GUINT32_SWAP_LE_BE_IA64(val) \ |
302 | (G_GNUC_EXTENSION \ |
303 | ({ guint32 __v, __x = ((guint32) (val)); \ |
304 | if (__builtin_constant_p (__x)) \ |
305 | __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \ |
306 | else \ |
307 | __asm__ __volatile__ ("shl %0 = %1, 32 ;;" \ |
308 | "mux1 %0 = %0, @rev ;;" \ |
309 | : "=r" (__v) \ |
310 | : "r" (__x)); \ |
311 | __v; })) |
312 | # define GUINT64_SWAP_LE_BE_IA64(val) \ |
313 | (G_GNUC_EXTENSION \ |
314 | ({ guint64 __v, __x = ((guint64) (val)); \ |
315 | if (__builtin_constant_p (__x)) \ |
316 | __v = GUINT64_SWAP_LE_BE_CONSTANT (__x); \ |
317 | else \ |
318 | __asm__ __volatile__ ("mux1 %0 = %1, @rev ;;" \ |
319 | : "=r" (__v) \ |
320 | : "r" (__x)); \ |
321 | __v; })) |
322 | # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_IA64 (val)) |
323 | # ifndef GUINT32_SWAP_LE_BE |
324 | # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_IA64 (val)) |
325 | # endif |
326 | # ifndef GUINT64_SWAP_LE_BE |
327 | # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_IA64 (val)) |
328 | # endif |
329 | # elif defined (__x86_64__) |
330 | # define GUINT32_SWAP_LE_BE_X86_64(val) \ |
331 | (G_GNUC_EXTENSION \ |
332 | ({ guint32 __v, __x = ((guint32) (val)); \ |
333 | if (__builtin_constant_p (__x)) \ |
334 | __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \ |
335 | else \ |
336 | __asm__ ("bswapl %0" \ |
337 | : "=r" (__v) \ |
338 | : "0" (__x)); \ |
339 | __v; })) |
340 | # define GUINT64_SWAP_LE_BE_X86_64(val) \ |
341 | (G_GNUC_EXTENSION \ |
342 | ({ guint64 __v, __x = ((guint64) (val)); \ |
343 | if (__builtin_constant_p (__x)) \ |
344 | __v = GUINT64_SWAP_LE_BE_CONSTANT (__x); \ |
345 | else \ |
346 | __asm__ ("bswapq %0" \ |
347 | : "=r" (__v) \ |
348 | : "0" (__x)); \ |
349 | __v; })) |
350 | /* gcc seems to figure out optimal code for this on its own */ |
351 | # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val)) |
352 | # ifndef GUINT32_SWAP_LE_BE |
353 | # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_X86_64 (val)) |
354 | # endif |
355 | # ifndef GUINT64_SWAP_LE_BE |
356 | # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_X86_64 (val)) |
357 | # endif |
358 | # else /* generic gcc */ |
359 | # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val)) |
360 | # ifndef GUINT32_SWAP_LE_BE |
361 | # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val)) |
362 | # endif |
363 | # ifndef GUINT64_SWAP_LE_BE |
364 | # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT (val)) |
365 | # endif |
366 | # endif |
367 | #else /* generic */ |
368 | # define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val)) |
369 | # define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val)) |
370 | # define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT (val)) |
371 | #endif /* generic */ |
372 | |
373 | #define GUINT16_SWAP_LE_PDP(val) ((guint16) (val)) |
374 | #define GUINT16_SWAP_BE_PDP(val) (GUINT16_SWAP_LE_BE (val)) |
375 | #define GUINT32_SWAP_LE_PDP(val) ((guint32) ( \ |
376 | (((guint32) (val) & (guint32) 0x0000ffffU) << 16) | \ |
377 | (((guint32) (val) & (guint32) 0xffff0000U) >> 16))) |
378 | #define GUINT32_SWAP_BE_PDP(val) ((guint32) ( \ |
379 | (((guint32) (val) & (guint32) 0x00ff00ffU) << 8) | \ |
380 | (((guint32) (val) & (guint32) 0xff00ff00U) >> 8))) |
381 | |
382 | /* The G*_TO_?E() macros are defined in glibconfig.h. |
383 | * The transformation is symmetric, so the FROM just maps to the TO. |
384 | */ |
385 | #define GINT16_FROM_LE(val) (GINT16_TO_LE (val)) |
386 | #define GUINT16_FROM_LE(val) (GUINT16_TO_LE (val)) |
387 | #define GINT16_FROM_BE(val) (GINT16_TO_BE (val)) |
388 | #define GUINT16_FROM_BE(val) (GUINT16_TO_BE (val)) |
389 | #define GINT32_FROM_LE(val) (GINT32_TO_LE (val)) |
390 | #define GUINT32_FROM_LE(val) (GUINT32_TO_LE (val)) |
391 | #define GINT32_FROM_BE(val) (GINT32_TO_BE (val)) |
392 | #define GUINT32_FROM_BE(val) (GUINT32_TO_BE (val)) |
393 | |
394 | #define GINT64_FROM_LE(val) (GINT64_TO_LE (val)) |
395 | #define GUINT64_FROM_LE(val) (GUINT64_TO_LE (val)) |
396 | #define GINT64_FROM_BE(val) (GINT64_TO_BE (val)) |
397 | #define GUINT64_FROM_BE(val) (GUINT64_TO_BE (val)) |
398 | |
399 | #define GLONG_FROM_LE(val) (GLONG_TO_LE (val)) |
400 | #define GULONG_FROM_LE(val) (GULONG_TO_LE (val)) |
401 | #define GLONG_FROM_BE(val) (GLONG_TO_BE (val)) |
402 | #define GULONG_FROM_BE(val) (GULONG_TO_BE (val)) |
403 | |
404 | #define GINT_FROM_LE(val) (GINT_TO_LE (val)) |
405 | #define GUINT_FROM_LE(val) (GUINT_TO_LE (val)) |
406 | #define GINT_FROM_BE(val) (GINT_TO_BE (val)) |
407 | #define GUINT_FROM_BE(val) (GUINT_TO_BE (val)) |
408 | |
409 | #define GSIZE_FROM_LE(val) (GSIZE_TO_LE (val)) |
410 | #define GSSIZE_FROM_LE(val) (GSSIZE_TO_LE (val)) |
411 | #define GSIZE_FROM_BE(val) (GSIZE_TO_BE (val)) |
412 | #define GSSIZE_FROM_BE(val) (GSSIZE_TO_BE (val)) |
413 | |
414 | /* Portable versions of host-network order stuff |
415 | */ |
416 | #define g_ntohl(val) (GUINT32_FROM_BE (val)) |
417 | #define g_ntohs(val) (GUINT16_FROM_BE (val)) |
418 | #define g_htonl(val) (GUINT32_TO_BE (val)) |
419 | #define g_htons(val) (GUINT16_TO_BE (val)) |
420 | |
421 | /* Overflow-checked unsigned integer arithmetic |
422 | */ |
423 | #ifndef _GLIB_TEST_OVERFLOW_FALLBACK |
424 | /* https://bugzilla.gnome.org/show_bug.cgi?id=769104 */ |
425 | #if __GNUC__ >= 5 && !defined(__INTEL_COMPILER) |
426 | #define _GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS |
427 | #elif g_macro__has_builtin(__builtin_add_overflow) |
428 | #define _GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS |
429 | #endif |
430 | #endif |
431 | |
432 | #ifdef _GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS |
433 | |
434 | #define g_uint_checked_add(dest, a, b) \ |
435 | (!__builtin_add_overflow(a, b, dest)) |
436 | #define g_uint_checked_mul(dest, a, b) \ |
437 | (!__builtin_mul_overflow(a, b, dest)) |
438 | |
439 | #define g_uint64_checked_add(dest, a, b) \ |
440 | (!__builtin_add_overflow(a, b, dest)) |
441 | #define g_uint64_checked_mul(dest, a, b) \ |
442 | (!__builtin_mul_overflow(a, b, dest)) |
443 | |
444 | #define g_size_checked_add(dest, a, b) \ |
445 | (!__builtin_add_overflow(a, b, dest)) |
446 | #define g_size_checked_mul(dest, a, b) \ |
447 | (!__builtin_mul_overflow(a, b, dest)) |
448 | |
449 | #else /* !_GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS */ |
450 | |
451 | /* The names of the following inlines are private. Use the macro |
452 | * definitions above. |
453 | */ |
454 | static inline gboolean _GLIB_CHECKED_ADD_UINT (guint *dest, guint a, guint b) { |
455 | *dest = a + b; return *dest >= a; } |
456 | static inline gboolean _GLIB_CHECKED_MUL_UINT (guint *dest, guint a, guint b) { |
457 | *dest = a * b; return !a || *dest / a == b; } |
458 | static inline gboolean _GLIB_CHECKED_ADD_UINT64 (guint64 *dest, guint64 a, guint64 b) { |
459 | *dest = a + b; return *dest >= a; } |
460 | static inline gboolean _GLIB_CHECKED_MUL_UINT64 (guint64 *dest, guint64 a, guint64 b) { |
461 | *dest = a * b; return !a || *dest / a == b; } |
462 | static inline gboolean _GLIB_CHECKED_ADD_SIZE (gsize *dest, gsize a, gsize b) { |
463 | *dest = a + b; return *dest >= a; } |
464 | static inline gboolean _GLIB_CHECKED_MUL_SIZE (gsize *dest, gsize a, gsize b) { |
465 | *dest = a * b; return !a || *dest / a == b; } |
466 | |
467 | #define g_uint_checked_add(dest, a, b) \ |
468 | _GLIB_CHECKED_ADD_UINT(dest, a, b) |
469 | #define g_uint_checked_mul(dest, a, b) \ |
470 | _GLIB_CHECKED_MUL_UINT(dest, a, b) |
471 | |
472 | #define g_uint64_checked_add(dest, a, b) \ |
473 | _GLIB_CHECKED_ADD_UINT64(dest, a, b) |
474 | #define g_uint64_checked_mul(dest, a, b) \ |
475 | _GLIB_CHECKED_MUL_UINT64(dest, a, b) |
476 | |
477 | #define g_size_checked_add(dest, a, b) \ |
478 | _GLIB_CHECKED_ADD_SIZE(dest, a, b) |
479 | #define g_size_checked_mul(dest, a, b) \ |
480 | _GLIB_CHECKED_MUL_SIZE(dest, a, b) |
481 | |
482 | #endif /* !_GLIB_HAVE_BUILTIN_OVERFLOW_CHECKS */ |
483 | |
484 | /* IEEE Standard 754 Single Precision Storage Format (gfloat): |
485 | * |
486 | * 31 30 23 22 0 |
487 | * +--------+---------------+---------------+ |
488 | * | s 1bit | e[30:23] 8bit | f[22:0] 23bit | |
489 | * +--------+---------------+---------------+ |
490 | * B0------------------->B1------->B2-->B3--> |
491 | * |
492 | * IEEE Standard 754 Double Precision Storage Format (gdouble): |
493 | * |
494 | * 63 62 52 51 32 31 0 |
495 | * +--------+----------------+----------------+ +---------------+ |
496 | * | s 1bit | e[62:52] 11bit | f[51:32] 20bit | | f[31:0] 32bit | |
497 | * +--------+----------------+----------------+ +---------------+ |
498 | * B0--------------->B1---------->B2--->B3----> B4->B5->B6->B7-> |
499 | */ |
500 | /* subtract from biased_exponent to form base2 exponent (normal numbers) */ |
501 | typedef union _GDoubleIEEE754 GDoubleIEEE754; |
502 | typedef union _GFloatIEEE754 GFloatIEEE754; |
503 | #define G_IEEE754_FLOAT_BIAS (127) |
504 | #define G_IEEE754_DOUBLE_BIAS (1023) |
505 | /* multiply with base2 exponent to get base10 exponent (normal numbers) */ |
506 | #define G_LOG_2_BASE_10 (0.30102999566398119521) |
507 | #if G_BYTE_ORDER == G_LITTLE_ENDIAN |
508 | union _GFloatIEEE754 |
509 | { |
510 | gfloat v_float; |
511 | struct { |
512 | guint mantissa : 23; |
513 | guint biased_exponent : 8; |
514 | guint sign : 1; |
515 | } mpn; |
516 | }; |
517 | union _GDoubleIEEE754 |
518 | { |
519 | gdouble v_double; |
520 | struct { |
521 | guint mantissa_low : 32; |
522 | guint mantissa_high : 20; |
523 | guint biased_exponent : 11; |
524 | guint sign : 1; |
525 | } mpn; |
526 | }; |
527 | #elif G_BYTE_ORDER == G_BIG_ENDIAN |
528 | union _GFloatIEEE754 |
529 | { |
530 | gfloat v_float; |
531 | struct { |
532 | guint sign : 1; |
533 | guint biased_exponent : 8; |
534 | guint mantissa : 23; |
535 | } mpn; |
536 | }; |
537 | union _GDoubleIEEE754 |
538 | { |
539 | gdouble v_double; |
540 | struct { |
541 | guint sign : 1; |
542 | guint biased_exponent : 11; |
543 | guint mantissa_high : 20; |
544 | guint mantissa_low : 32; |
545 | } mpn; |
546 | }; |
547 | #else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ |
548 | #error unknown ENDIAN type |
549 | #endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */ |
550 | |
551 | typedef struct _GTimeVal GTimeVal GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime); |
552 | |
553 | struct _GTimeVal |
554 | { |
555 | glong tv_sec; |
556 | glong tv_usec; |
557 | } GLIB_DEPRECATED_TYPE_IN_2_62_FOR(GDateTime); |
558 | |
559 | typedef gint grefcount; |
560 | typedef gint gatomicrefcount; /* should be accessed only using atomics */ |
561 | |
562 | G_END_DECLS |
563 | |
564 | /* We prefix variable declarations so they can |
565 | * properly get exported in Windows DLLs. |
566 | */ |
567 | #ifndef GLIB_VAR |
568 | # ifdef G_PLATFORM_WIN32 |
569 | # ifdef GLIB_STATIC_COMPILATION |
570 | # define GLIB_VAR extern |
571 | # else /* !GLIB_STATIC_COMPILATION */ |
572 | # ifdef GLIB_COMPILATION |
573 | # ifdef DLL_EXPORT |
574 | # define GLIB_VAR extern __declspec(dllexport) |
575 | # else /* !DLL_EXPORT */ |
576 | # define GLIB_VAR extern |
577 | # endif /* !DLL_EXPORT */ |
578 | # else /* !GLIB_COMPILATION */ |
579 | # define GLIB_VAR extern __declspec(dllimport) |
580 | # endif /* !GLIB_COMPILATION */ |
581 | # endif /* !GLIB_STATIC_COMPILATION */ |
582 | # else /* !G_PLATFORM_WIN32 */ |
583 | # define GLIB_VAR _GLIB_EXTERN |
584 | # endif /* !G_PLATFORM_WIN32 */ |
585 | #endif /* GLIB_VAR */ |
586 | |
587 | #endif /* __G_TYPES_H__ */ |
588 | |