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pstdint.h
1 /* A portable stdint.h
2  ****************************************************************************
3  * BSD License:
4  ****************************************************************************
5  *
6  * Copyright (c) 2005-2007 Paul Hsieh
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in the
17  * documentation and/or other materials provided with the distribution.
18  * 3. The name of the author may not be used to endorse or promote products
19  * derived from this software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  *
32  ****************************************************************************
33  *
34  * Version 0.1.10
35  *
36  * The ANSI C standard committee, for the C99 standard, specified the
37  * inclusion of a new standard include file called stdint.h. This is
38  * a very useful and long desired include file which contains several
39  * very precise definitions for integer scalar types that is
40  * critically important for making portable several classes of
41  * applications including cryptography, hashing, variable length
42  * integer libraries and so on. But for most developers its likely
43  * useful just for programming sanity.
44  *
45  * The problem is that most compiler vendors have decided not to
46  * implement the C99 standard, and the next C++ language standard
47  * (which has a lot more mindshare these days) will be a long time in
48  * coming and its unknown whether or not it will include stdint.h or
49  * how much adoption it will have. Either way, it will be a long time
50  * before all compilers come with a stdint.h and it also does nothing
51  * for the extremely large number of compilers available today which
52  * do not include this file, or anything comparable to it.
53  *
54  * So that's what this file is all about. Its an attempt to build a
55  * single universal include file that works on as many platforms as
56  * possible to deliver what stdint.h is supposed to. A few things
57  * that should be noted about this file:
58  *
59  * 1) It is not guaranteed to be portable and/or present an identical
60  * interface on all platforms. The extreme variability of the
61  * ANSI C standard makes this an impossibility right from the
62  * very get go. Its really only meant to be useful for the vast
63  * majority of platforms that possess the capability of
64  * implementing usefully and precisely defined, standard sized
65  * integer scalars. Systems which are not intrinsically 2s
66  * complement may produce invalid constants.
67  *
68  * 2) There is an unavoidable use of non-reserved symbols.
69  *
70  * 3) Other standard include files are invoked.
71  *
72  * 4) This file may come in conflict with future platforms that do
73  * include stdint.h. The hope is that one or the other can be
74  * used with no real difference.
75  *
76  * 5) In the current verison, if your platform can't represent
77  * int32_t, int16_t and int8_t, it just dumps out with a compiler
78  * error.
79  *
80  * 6) 64 bit integers may or may not be defined. Test for their
81  * presence with the test: #ifdef INT64_MAX or #ifdef UINT64_MAX.
82  * Note that this is different from the C99 specification which
83  * requires the existence of 64 bit support in the compiler. If
84  * this is not defined for your platform, yet it is capable of
85  * dealing with 64 bits then it is because this file has not yet
86  * been extended to cover all of your system's capabilities.
87  *
88  * 7) (u)intptr_t may or may not be defined. Test for its presence
89  * with the test: #ifdef PTRDIFF_MAX. If this is not defined
90  * for your platform, then it is because this file has not yet
91  * been extended to cover all of your system's capabilities, not
92  * because its optional.
93  *
94  * 8) The following might not been defined even if your platform is
95  * capable of defining it:
96  *
97  * WCHAR_MIN
98  * WCHAR_MAX
99  * (u)int64_t
100  * PTRDIFF_MIN
101  * PTRDIFF_MAX
102  * (u)intptr_t
103  *
104  * 9) The following have not been defined:
105  *
106  * WINT_MIN
107  * WINT_MAX
108  *
109  * 10) The criteria for defining (u)int_least(*)_t isn't clear,
110  * except for systems which don't have a type that precisely
111  * defined 8, 16, or 32 bit types (which this include file does
112  * not support anyways). Default definitions have been given.
113  *
114  * 11) The criteria for defining (u)int_fast(*)_t isn't something I
115  * would trust to any particular compiler vendor or the ANSI C
116  * committee. It is well known that "compatible systems" are
117  * commonly created that have very different performance
118  * characteristics from the systems they are compatible with,
119  * especially those whose vendors make both the compiler and the
120  * system. Default definitions have been given, but its strongly
121  * recommended that users never use these definitions for any
122  * reason (they do *NOT* deliver any serious guarantee of
123  * improved performance -- not in this file, nor any vendor's
124  * stdint.h).
125  *
126  * 12) The following macros:
127  *
128  * PRINTF_INTMAX_MODIFIER
129  * PRINTF_INT64_MODIFIER
130  * PRINTF_INT32_MODIFIER
131  * PRINTF_INT16_MODIFIER
132  * PRINTF_LEAST64_MODIFIER
133  * PRINTF_LEAST32_MODIFIER
134  * PRINTF_LEAST16_MODIFIER
135  * PRINTF_INTPTR_MODIFIER
136  *
137  * are strings which have been defined as the modifiers required
138  * for the "d", "u" and "x" printf formats to correctly output
139  * (u)intmax_t, (u)int64_t, (u)int32_t, (u)int16_t, (u)least64_t,
140  * (u)least32_t, (u)least16_t and (u)intptr_t types respectively.
141  * PRINTF_INTPTR_MODIFIER is not defined for some systems which
142  * provide their own stdint.h. PRINTF_INT64_MODIFIER is not
143  * defined if INT64_MAX is not defined. These are an extension
144  * beyond what C99 specifies must be in stdint.h.
145  *
146  * In addition, the following macros are defined:
147  *
148  * PRINTF_INTMAX_HEX_WIDTH
149  * PRINTF_INT64_HEX_WIDTH
150  * PRINTF_INT32_HEX_WIDTH
151  * PRINTF_INT16_HEX_WIDTH
152  * PRINTF_INT8_HEX_WIDTH
153  * PRINTF_INTMAX_DEC_WIDTH
154  * PRINTF_INT64_DEC_WIDTH
155  * PRINTF_INT32_DEC_WIDTH
156  * PRINTF_INT16_DEC_WIDTH
157  * PRINTF_INT8_DEC_WIDTH
158  *
159  * Which specifies the maximum number of characters required to
160  * print the number of that type in either hexadecimal or decimal.
161  * These are an extension beyond what C99 specifies must be in
162  * stdint.h.
163  *
164  * Compilers tested (all with 0 warnings at their highest respective
165  * settings): Borland Turbo C 2.0, WATCOM C/C++ 11.0 (16 bits and 32
166  * bits), Microsoft Visual C++ 6.0 (32 bit), Microsoft Visual Studio
167  * .net (VC7), Intel C++ 4.0, GNU gcc v3.3.3
168  *
169  * This file should be considered a work in progress. Suggestions for
170  * improvements, especially those which increase coverage are strongly
171  * encouraged.
172  *
173  * Acknowledgements
174  *
175  * The following people have made significant contributions to the
176  * development and testing of this file:
177  *
178  * Chris Howie
179  * John Steele Scott
180  * Dave Thorup
181  *
182  */
183 
184 #include <stddef.h>
185 #include <limits.h>
186 #include <signal.h>
187 
188 /*
189  * For gcc with _STDINT_H, fill in the PRINTF_INT*_MODIFIER macros, and
190  * do nothing else. On the Mac OS X version of gcc this is _STDINT_H_.
191  */
192 
193 #if ((defined(__STDC__) && __STDC__ && __STDC_VERSION__ >= 199901L) || (defined (__WATCOMC__) && (defined (_STDINT_H_INCLUDED) || __WATCOMC__ >= 1250)) || (defined(__GNUC__) && (defined(_STDINT_H) || defined(_STDINT_H_)))) && !defined (_PSTDINT_H_INCLUDED) && !defined(_STDINT)
194 #include <stdint.h>
195 #define _PSTDINT_H_INCLUDED
196 # ifndef PRINTF_INT64_MODIFIER
197 # define PRINTF_INT64_MODIFIER "ll"
198 # endif
199 # ifndef PRINTF_INT32_MODIFIER
200 # define PRINTF_INT32_MODIFIER "l"
201 # endif
202 # ifndef PRINTF_INT16_MODIFIER
203 # define PRINTF_INT16_MODIFIER "h"
204 # endif
205 # ifndef PRINTF_INTMAX_MODIFIER
206 # define PRINTF_INTMAX_MODIFIER PRINTF_INT64_MODIFIER
207 # endif
208 # ifndef PRINTF_INT64_HEX_WIDTH
209 # define PRINTF_INT64_HEX_WIDTH "16"
210 # endif
211 # ifndef PRINTF_INT32_HEX_WIDTH
212 # define PRINTF_INT32_HEX_WIDTH "8"
213 # endif
214 # ifndef PRINTF_INT16_HEX_WIDTH
215 # define PRINTF_INT16_HEX_WIDTH "4"
216 # endif
217 # ifndef PRINTF_INT8_HEX_WIDTH
218 # define PRINTF_INT8_HEX_WIDTH "2"
219 # endif
220 # ifndef PRINTF_INT64_DEC_WIDTH
221 # define PRINTF_INT64_DEC_WIDTH "20"
222 # endif
223 # ifndef PRINTF_INT32_DEC_WIDTH
224 # define PRINTF_INT32_DEC_WIDTH "10"
225 # endif
226 # ifndef PRINTF_INT16_DEC_WIDTH
227 # define PRINTF_INT16_DEC_WIDTH "5"
228 # endif
229 # ifndef PRINTF_INT8_DEC_WIDTH
230 # define PRINTF_INT8_DEC_WIDTH "3"
231 # endif
232 # ifndef PRINTF_INTMAX_HEX_WIDTH
233 # define PRINTF_INTMAX_HEX_WIDTH PRINTF_INT64_HEX_WIDTH
234 # endif
235 # ifndef PRINTF_INTMAX_DEC_WIDTH
236 # define PRINTF_INTMAX_DEC_WIDTH PRINTF_INT64_DEC_WIDTH
237 # endif
238 
239 /*
240  * Something really weird is going on with Open Watcom. Just pull some of
241  * these duplicated definitions from Open Watcom's stdint.h file for now.
242  */
243 
244 # if defined (__WATCOMC__) && __WATCOMC__ >= 1250
245 # if !defined (INT64_C)
246 # define INT64_C(x) (x + (INT64_MAX - INT64_MAX))
247 # endif
248 # if !defined (UINT64_C)
249 # define UINT64_C(x) (x + (UINT64_MAX - UINT64_MAX))
250 # endif
251 # if !defined (INT32_C)
252 # define INT32_C(x) (x + (INT32_MAX - INT32_MAX))
253 # endif
254 # if !defined (UINT32_C)
255 # define UINT32_C(x) (x + (UINT32_MAX - UINT32_MAX))
256 # endif
257 # if !defined (INT16_C)
258 # define INT16_C(x) (x)
259 # endif
260 # if !defined (UINT16_C)
261 # define UINT16_C(x) (x)
262 # endif
263 # if !defined (INT8_C)
264 # define INT8_C(x) (x)
265 # endif
266 # if !defined (UINT8_C)
267 # define UINT8_C(x) (x)
268 # endif
269 # if !defined (UINT64_MAX)
270 # define UINT64_MAX 18446744073709551615ULL
271 # endif
272 # if !defined (INT64_MAX)
273 # define INT64_MAX 9223372036854775807LL
274 # endif
275 # if !defined (UINT32_MAX)
276 # define UINT32_MAX 4294967295UL
277 # endif
278 # if !defined (INT32_MAX)
279 # define INT32_MAX 2147483647L
280 # endif
281 # if !defined (INTMAX_MAX)
282 # define INTMAX_MAX INT64_MAX
283 # endif
284 # if !defined (INTMAX_MIN)
285 # define INTMAX_MIN INT64_MIN
286 # endif
287 # endif
288 #endif
289 
290 #ifndef _PSTDINT_H_INCLUDED
291 #define _PSTDINT_H_INCLUDED
292 
293 #ifndef SIZE_MAX
294 # define SIZE_MAX (~(size_t)0)
295 #endif
296 
297 /*
298  * Deduce the type assignments from limits.h under the assumption that
299  * integer sizes in bits are powers of 2, and follow the ANSI
300  * definitions.
301  */
302 
303 #ifndef UINT8_MAX
304 # define UINT8_MAX 0xff
305 #endif
306 #ifndef uint8_t
307 # if (UCHAR_MAX == UINT8_MAX) || defined (S_SPLINT_S)
308  typedef unsigned char uint8_t;
309 # define UINT8_C(v) ((uint8_t) v)
310 # else
311 # error "Platform not supported"
312 # endif
313 #endif
314 
315 #ifndef INT8_MAX
316 # define INT8_MAX 0x7f
317 #endif
318 #ifndef INT8_MIN
319 # define INT8_MIN INT8_C(0x80)
320 #endif
321 #ifndef int8_t
322 # if (SCHAR_MAX == INT8_MAX) || defined (S_SPLINT_S)
323  typedef signed char int8_t;
324 # define INT8_C(v) ((int8_t) v)
325 # else
326 # error "Platform not supported"
327 # endif
328 #endif
329 
330 #ifndef UINT16_MAX
331 # define UINT16_MAX 0xffff
332 #endif
333 #ifndef uint16_t
334 #if (UINT_MAX == UINT16_MAX) || defined (S_SPLINT_S)
335  typedef unsigned int uint16_t;
336 # ifndef PRINTF_INT16_MODIFIER
337 # define PRINTF_INT16_MODIFIER ""
338 # endif
339 # define UINT16_C(v) ((uint16_t) (v))
340 #elif (USHRT_MAX == UINT16_MAX)
341  typedef unsigned short uint16_t;
342 # define UINT16_C(v) ((uint16_t) (v))
343 # ifndef PRINTF_INT16_MODIFIER
344 # define PRINTF_INT16_MODIFIER "h"
345 # endif
346 #else
347 #error "Platform not supported"
348 #endif
349 #endif
350 
351 #ifndef INT16_MAX
352 # define INT16_MAX 0x7fff
353 #endif
354 #ifndef INT16_MIN
355 # define INT16_MIN INT16_C(0x8000)
356 #endif
357 #ifndef int16_t
358 #if (INT_MAX == INT16_MAX) || defined (S_SPLINT_S)
359  typedef signed int int16_t;
360 # define INT16_C(v) ((int16_t) (v))
361 # ifndef PRINTF_INT16_MODIFIER
362 # define PRINTF_INT16_MODIFIER ""
363 # endif
364 #elif (SHRT_MAX == INT16_MAX)
365  typedef signed short int16_t;
366 # define INT16_C(v) ((int16_t) (v))
367 # ifndef PRINTF_INT16_MODIFIER
368 # define PRINTF_INT16_MODIFIER "h"
369 # endif
370 #else
371 #error "Platform not supported"
372 #endif
373 #endif
374 
375 #ifndef UINT32_MAX
376 # define UINT32_MAX (0xffffffffUL)
377 #endif
378 #ifndef uint32_t
379 #if (ULONG_MAX == UINT32_MAX) || defined (S_SPLINT_S)
380  typedef unsigned long uint32_t;
381 # define UINT32_C(v) v ## UL
382 # ifndef PRINTF_INT32_MODIFIER
383 # define PRINTF_INT32_MODIFIER "l"
384 # endif
385 #elif (UINT_MAX == UINT32_MAX)
386  typedef unsigned int uint32_t;
387 # ifndef PRINTF_INT32_MODIFIER
388 # define PRINTF_INT32_MODIFIER ""
389 # endif
390 # define UINT32_C(v) v ## U
391 #elif (USHRT_MAX == UINT32_MAX)
392  typedef unsigned short uint32_t;
393 # define UINT32_C(v) ((unsigned short) (v))
394 # ifndef PRINTF_INT32_MODIFIER
395 # define PRINTF_INT32_MODIFIER ""
396 # endif
397 #else
398 #error "Platform not supported"
399 #endif
400 #endif
401 
402 #ifndef INT32_MAX
403 # define INT32_MAX (0x7fffffffL)
404 #endif
405 #ifndef INT32_MIN
406 # define INT32_MIN INT32_C(0x80000000)
407 #endif
408 #ifndef int32_t
409 #if (LONG_MAX == INT32_MAX) || defined (S_SPLINT_S)
410  typedef signed long int32_t;
411 # define INT32_C(v) v ## L
412 # ifndef PRINTF_INT32_MODIFIER
413 # define PRINTF_INT32_MODIFIER "l"
414 # endif
415 #elif (INT_MAX == INT32_MAX)
416  typedef signed int int32_t;
417 # define INT32_C(v) v
418 # ifndef PRINTF_INT32_MODIFIER
419 # define PRINTF_INT32_MODIFIER ""
420 # endif
421 #elif (SHRT_MAX == INT32_MAX)
422  typedef signed short int32_t;
423 # define INT32_C(v) ((short) (v))
424 # ifndef PRINTF_INT32_MODIFIER
425 # define PRINTF_INT32_MODIFIER ""
426 # endif
427 #else
428 #error "Platform not supported"
429 #endif
430 #endif
431 
432 /*
433  * The macro stdint_int64_defined is temporarily used to record
434  * whether or not 64 integer support is available. It must be
435  * defined for any 64 integer extensions for new platforms that are
436  * added.
437  */
438 
439 #undef stdint_int64_defined
440 #if (defined(__STDC__) && defined(__STDC_VERSION__)) || defined (S_SPLINT_S)
441 # if (__STDC__ && __STDC_VERSION >= 199901L) || defined (S_SPLINT_S)
442 # define stdint_int64_defined
443  typedef long long int64_t;
444  typedef unsigned long long uint64_t;
445 # define UINT64_C(v) v ## ULL
446 # define INT64_C(v) v ## LL
447 # ifndef PRINTF_INT64_MODIFIER
448 # define PRINTF_INT64_MODIFIER "ll"
449 # endif
450 # endif
451 #endif
452 
453 #if !defined (stdint_int64_defined)
454 # if defined(__GNUC__)
455 # define stdint_int64_defined
456  __extension__ typedef long long int64_t;
457  __extension__ typedef unsigned long long uint64_t;
458 # define UINT64_C(v) v ## ULL
459 # define INT64_C(v) v ## LL
460 # ifndef PRINTF_INT64_MODIFIER
461 # define PRINTF_INT64_MODIFIER "ll"
462 # endif
463 # elif defined(__MWERKS__) || defined (__SUNPRO_C) || defined (__SUNPRO_CC) || defined (__APPLE_CC__) || defined (_LONG_LONG) || defined (_CRAYC) || defined (S_SPLINT_S)
464 # define stdint_int64_defined
465  typedef long long int64_t;
466  typedef unsigned long long uint64_t;
467 # define UINT64_C(v) v ## ULL
468 # define INT64_C(v) v ## LL
469 # ifndef PRINTF_INT64_MODIFIER
470 # define PRINTF_INT64_MODIFIER "ll"
471 # endif
472 # elif (defined(__WATCOMC__) && defined(__WATCOM_INT64__)) || (defined(_MSC_VER) && _INTEGRAL_MAX_BITS >= 64) || (defined (__BORLANDC__) && __BORLANDC__ > 0x460) || defined (__alpha) || defined (__DECC)
473 # define stdint_int64_defined
474  typedef __int64 int64_t;
475  typedef unsigned __int64 uint64_t;
476 # define UINT64_C(v) v ## UI64
477 # define INT64_C(v) v ## I64
478 # ifndef PRINTF_INT64_MODIFIER
479 # define PRINTF_INT64_MODIFIER "I64"
480 # endif
481 # endif
482 #endif
483 
484 #if !defined (LONG_LONG_MAX) && defined (INT64_C)
485 # define LONG_LONG_MAX INT64_C (9223372036854775807)
486 #endif
487 #ifndef ULONG_LONG_MAX
488 # define ULONG_LONG_MAX UINT64_C (18446744073709551615)
489 #endif
490 
491 #if !defined (INT64_MAX) && defined (INT64_C)
492 # define INT64_MAX INT64_C (9223372036854775807)
493 #endif
494 #if !defined (INT64_MIN) && defined (INT64_C)
495 # define INT64_MIN INT64_C (-9223372036854775808)
496 #endif
497 #if !defined (UINT64_MAX) && defined (INT64_C)
498 # define UINT64_MAX UINT64_C (18446744073709551615)
499 #endif
500 
501 /*
502  * Width of hexadecimal for number field.
503  */
504 
505 #ifndef PRINTF_INT64_HEX_WIDTH
506 # define PRINTF_INT64_HEX_WIDTH "16"
507 #endif
508 #ifndef PRINTF_INT32_HEX_WIDTH
509 # define PRINTF_INT32_HEX_WIDTH "8"
510 #endif
511 #ifndef PRINTF_INT16_HEX_WIDTH
512 # define PRINTF_INT16_HEX_WIDTH "4"
513 #endif
514 #ifndef PRINTF_INT8_HEX_WIDTH
515 # define PRINTF_INT8_HEX_WIDTH "2"
516 #endif
517 
518 #ifndef PRINTF_INT64_DEC_WIDTH
519 # define PRINTF_INT64_DEC_WIDTH "20"
520 #endif
521 #ifndef PRINTF_INT32_DEC_WIDTH
522 # define PRINTF_INT32_DEC_WIDTH "10"
523 #endif
524 #ifndef PRINTF_INT16_DEC_WIDTH
525 # define PRINTF_INT16_DEC_WIDTH "5"
526 #endif
527 #ifndef PRINTF_INT8_DEC_WIDTH
528 # define PRINTF_INT8_DEC_WIDTH "3"
529 #endif
530 
531 /*
532  * Ok, lets not worry about 128 bit integers for now. Moore's law says
533  * we don't need to worry about that until about 2040 at which point
534  * we'll have bigger things to worry about.
535  */
536 
537 #ifdef stdint_int64_defined
538  typedef int64_t intmax_t;
539  typedef uint64_t uintmax_t;
540 # define INTMAX_MAX INT64_MAX
541 # define INTMAX_MIN INT64_MIN
542 # define UINTMAX_MAX UINT64_MAX
543 # define UINTMAX_C(v) UINT64_C(v)
544 # define INTMAX_C(v) INT64_C(v)
545 # ifndef PRINTF_INTMAX_MODIFIER
546 # define PRINTF_INTMAX_MODIFIER PRINTF_INT64_MODIFIER
547 # endif
548 # ifndef PRINTF_INTMAX_HEX_WIDTH
549 # define PRINTF_INTMAX_HEX_WIDTH PRINTF_INT64_HEX_WIDTH
550 # endif
551 # ifndef PRINTF_INTMAX_DEC_WIDTH
552 # define PRINTF_INTMAX_DEC_WIDTH PRINTF_INT64_DEC_WIDTH
553 # endif
554 #else
555  typedef int32_t intmax_t;
556  typedef uint32_t uintmax_t;
557 # define INTMAX_MAX INT32_MAX
558 # define UINTMAX_MAX UINT32_MAX
559 # define UINTMAX_C(v) UINT32_C(v)
560 # define INTMAX_C(v) INT32_C(v)
561 # ifndef PRINTF_INTMAX_MODIFIER
562 # define PRINTF_INTMAX_MODIFIER PRINTF_INT32_MODIFIER
563 # endif
564 # ifndef PRINTF_INTMAX_HEX_WIDTH
565 # define PRINTF_INTMAX_HEX_WIDTH PRINTF_INT32_HEX_WIDTH
566 # endif
567 # ifndef PRINTF_INTMAX_DEC_WIDTH
568 # define PRINTF_INTMAX_DEC_WIDTH PRINTF_INT32_DEC_WIDTH
569 # endif
570 #endif
571 
572 /*
573  * Because this file currently only supports platforms which have
574  * precise powers of 2 as bit sizes for the default integers, the
575  * least definitions are all trivial. Its possible that a future
576  * version of this file could have different definitions.
577  */
578 
579 #ifndef stdint_least_defined
580  typedef int8_t int_least8_t;
581  typedef uint8_t uint_least8_t;
582  typedef int16_t int_least16_t;
583  typedef uint16_t uint_least16_t;
584  typedef int32_t int_least32_t;
585  typedef uint32_t uint_least32_t;
586 # define PRINTF_LEAST32_MODIFIER PRINTF_INT32_MODIFIER
587 # define PRINTF_LEAST16_MODIFIER PRINTF_INT16_MODIFIER
588 # define UINT_LEAST8_MAX UINT8_MAX
589 # define INT_LEAST8_MAX INT8_MAX
590 # define UINT_LEAST16_MAX UINT16_MAX
591 # define INT_LEAST16_MAX INT16_MAX
592 # define UINT_LEAST32_MAX UINT32_MAX
593 # define INT_LEAST32_MAX INT32_MAX
594 # define INT_LEAST8_MIN INT8_MIN
595 # define INT_LEAST16_MIN INT16_MIN
596 # define INT_LEAST32_MIN INT32_MIN
597 # ifdef stdint_int64_defined
598  typedef int64_t int_least64_t;
599  typedef uint64_t uint_least64_t;
600 # define PRINTF_LEAST64_MODIFIER PRINTF_INT64_MODIFIER
601 # define UINT_LEAST64_MAX UINT64_MAX
602 # define INT_LEAST64_MAX INT64_MAX
603 # define INT_LEAST64_MIN INT64_MIN
604 # endif
605 #endif
606 #undef stdint_least_defined
607 
608 /*
609  * The ANSI C committee pretending to know or specify anything about
610  * performance is the epitome of misguided arrogance. The mandate of
611  * this file is to *ONLY* ever support that absolute minimum
612  * definition of the fast integer types, for compatibility purposes.
613  * No extensions, and no attempt to suggest what may or may not be a
614  * faster integer type will ever be made in this file. Developers are
615  * warned to stay away from these types when using this or any other
616  * stdint.h.
617  */
618 
619 typedef int_least8_t int_fast8_t;
620 typedef uint_least8_t uint_fast8_t;
621 typedef int_least16_t int_fast16_t;
622 typedef uint_least16_t uint_fast16_t;
623 typedef int_least32_t int_fast32_t;
624 typedef uint_least32_t uint_fast32_t;
625 #define UINT_FAST8_MAX UINT_LEAST8_MAX
626 #define INT_FAST8_MAX INT_LEAST8_MAX
627 #define UINT_FAST16_MAX UINT_LEAST16_MAX
628 #define INT_FAST16_MAX INT_LEAST16_MAX
629 #define UINT_FAST32_MAX UINT_LEAST32_MAX
630 #define INT_FAST32_MAX INT_LEAST32_MAX
631 #define INT_FAST8_MIN INT_LEAST8_MIN
632 #define INT_FAST16_MIN INT_LEAST16_MIN
633 #define INT_FAST32_MIN INT_LEAST32_MIN
634 #ifdef stdint_int64_defined
635  typedef int_least64_t int_fast64_t;
636  typedef uint_least64_t uint_fast64_t;
637 # define UINT_FAST64_MAX UINT_LEAST64_MAX
638 # define INT_FAST64_MAX INT_LEAST64_MAX
639 # define INT_FAST64_MIN INT_LEAST64_MIN
640 #endif
641 
642 #undef stdint_int64_defined
643 
644 /*
645  * Whatever piecemeal, per compiler thing we can do about the wchar_t
646  * type limits.
647  */
648 
649 #if defined(__WATCOMC__) || defined(_MSC_VER) || defined (__GNUC__)
650 # include <wchar.h>
651 # ifndef WCHAR_MIN
652 # define WCHAR_MIN 0
653 # endif
654 # ifndef WCHAR_MAX
655 # define WCHAR_MAX ((wchar_t)-1)
656 # endif
657 #endif
658 
659 /*
660  * Whatever piecemeal, per compiler/platform thing we can do about the
661  * (u)intptr_t types and limits.
662  */
663 
664 #if defined (_MSC_VER) && defined (_UINTPTR_T_DEFINED)
665 # define STDINT_H_UINTPTR_T_DEFINED
666 #endif
667 
668 #ifndef STDINT_H_UINTPTR_T_DEFINED
669 # if defined (__alpha__) || defined (__ia64__) || defined (__x86_64__) || defined (_WIN64)
670 # define stdint_intptr_bits 64
671 # elif defined (__WATCOMC__) || defined (__TURBOC__)
672 # if defined(__TINY__) || defined(__SMALL__) || defined(__MEDIUM__)
673 # define stdint_intptr_bits 16
674 # else
675 # define stdint_intptr_bits 32
676 # endif
677 # elif defined (__i386__) || defined (_WIN32) || defined (WIN32)
678 # define stdint_intptr_bits 32
679 # elif defined (__INTEL_COMPILER)
680 /* TODO -- what will Intel do about x86-64? */
681 # endif
682 
683 # ifdef stdint_intptr_bits
684 # define stdint_intptr_glue3_i(a,b,c) a##b##c
685 # define stdint_intptr_glue3(a,b,c) stdint_intptr_glue3_i(a,b,c)
686 # ifndef PRINTF_INTPTR_MODIFIER
687 # define PRINTF_INTPTR_MODIFIER stdint_intptr_glue3(PRINTF_INT,stdint_intptr_bits,_MODIFIER)
688 # endif
689 # ifndef PTRDIFF_MAX
690 # define PTRDIFF_MAX stdint_intptr_glue3(INT,stdint_intptr_bits,_MAX)
691 # endif
692 # ifndef PTRDIFF_MIN
693 # define PTRDIFF_MIN stdint_intptr_glue3(INT,stdint_intptr_bits,_MIN)
694 # endif
695 # ifndef UINTPTR_MAX
696 # define UINTPTR_MAX stdint_intptr_glue3(UINT,stdint_intptr_bits,_MAX)
697 # endif
698 # ifndef INTPTR_MAX
699 # define INTPTR_MAX stdint_intptr_glue3(INT,stdint_intptr_bits,_MAX)
700 # endif
701 # ifndef INTPTR_MIN
702 # define INTPTR_MIN stdint_intptr_glue3(INT,stdint_intptr_bits,_MIN)
703 # endif
704 # ifndef INTPTR_C
705 # define INTPTR_C(x) stdint_intptr_glue3(INT,stdint_intptr_bits,_C)(x)
706 # endif
707 # ifndef UINTPTR_C
708 # define UINTPTR_C(x) stdint_intptr_glue3(UINT,stdint_intptr_bits,_C)(x)
709 # endif
710  typedef stdint_intptr_glue3(uint,stdint_intptr_bits,_t) uintptr_t;
711  typedef stdint_intptr_glue3( int,stdint_intptr_bits,_t) intptr_t;
712 # else
713 /* TODO -- This following is likely wrong for some platforms, and does
714  nothing for the definition of uintptr_t. */
715  typedef ptrdiff_t intptr_t;
716 # endif
717 # define STDINT_H_UINTPTR_T_DEFINED
718 #endif
719 
720 /*
721  * Assumes sig_atomic_t is signed and we have a 2s complement machine.
722  */
723 
724 #ifndef SIG_ATOMIC_MAX
725 # define SIG_ATOMIC_MAX ((((sig_atomic_t) 1) << (sizeof (sig_atomic_t)*CHAR_BIT-1)) - 1)
726 #endif
727 
728 #endif
729 
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