1 /* $NetBSD: cdefs.h,v 1.126 2015/08/30 08:46:44 mlelstv Exp $ */
2
3 /* * Copyright (c) 1991, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Berkeley Software Design, Inc.
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 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)cdefs.h 8.8 (Berkeley) 1/9/95
34 */
35
36 #ifndef _SYS_CDEFS_H_
37 #define _SYS_CDEFS_H_
38
39 #ifdef _KERNEL_OPT
40 #include "opt_diagnostic.h"
41 #endif
42
43 /*
44 * Macro to test if we're using a GNU C compiler of a specific vintage
45 * or later, for e.g. features that appeared in a particular version
46 * of GNU C. Usage:
47 *
48 * #if __GNUC_PREREQ__(major, minor)
49 * ...cool feature...
50 * #else
51 * ...delete feature...
52 * #endif
53 */
54 #ifdef __GNUC__
55 #define __GNUC_PREREQ__(x, y) \
56 ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \
57 (__GNUC__ > (x)))
58 #else
59 #define __GNUC_PREREQ__(x, y) 0
60 #endif
61
62 #include <machine/cdefs.h>
63 #ifdef __ELF__
64 #include <sys/cdefs_elf.h>
65 #else
66 #include <sys/cdefs_aout.h>
67 #endif
68
69 #ifdef __GNUC__
70 #define __strict_weak_alias(alias,sym) \
71 __unused static __typeof__(alias) *__weak_alias_##alias = &sym; \
72 __weak_alias(alias,sym)
73 #else
74 #define __strict_weak_alias(alias,sym) __weak_alias(alias,sym)
75 #endif
76
77 /*
78 * Optional marker for size-optimised MD calling convention.
79 */
80 #ifndef __compactcall
81 #define __compactcall
82 #endif
83
84 /*
85 * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
86 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
87 * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
88 * in between its arguments. __CONCAT can also concatenate double-quoted
89 * strings produced by the __STRING macro, but this only works with ANSI C.
90 */
91
92 #define ___STRING(x) __STRING(x)
93 #define ___CONCAT(x,y) __CONCAT(x,y)
94
95 #if __STDC__ || defined(__cplusplus)
96 #define __P(protos) protos /* full-blown ANSI C */
97 #define __CONCAT(x,y) x ## y
98 #define __STRING(x) #x
99
100 #define __const const /* define reserved names to standard */
101 #define __signed signed
102 #define __volatile volatile
103 #if defined(__cplusplus) || defined(__PCC__)
104 #define __inline inline /* convert to C++/C99 keyword */
105 #else
106 #if !defined(__GNUC__) && !defined(__lint__)
107 #define __inline /* delete GCC keyword */
108 #endif /* !__GNUC__ && !__lint__ */
109 #endif /* !__cplusplus */
110
111 #else /* !(__STDC__ || __cplusplus) */
112 #define __P(protos) () /* traditional C preprocessor */
113 #define __CONCAT(x,y) x/**/y
114 #define __STRING(x) "x"
115
116 #ifndef __GNUC__
117 #define __const /* delete pseudo-ANSI C keywords */
118 #define __inline
119 #define __signed
120 #define __volatile
121 #endif /* !__GNUC__ */
122
123 /*
124 * In non-ANSI C environments, new programs will want ANSI-only C keywords
125 * deleted from the program and old programs will want them left alone.
126 * Programs using the ANSI C keywords const, inline etc. as normal
127 * identifiers should define -DNO_ANSI_KEYWORDS.
128 */
129 #ifndef NO_ANSI_KEYWORDS
130 #define const __const /* convert ANSI C keywords */
131 #define inline __inline
132 #define signed __signed
133 #define volatile __volatile
134 #endif /* !NO_ANSI_KEYWORDS */
135 #endif /* !(__STDC__ || __cplusplus) */
136
137 /*
138 * Used for internal auditing of the NetBSD source tree.
139 */
140 #ifdef __AUDIT__
141 #define __aconst __const
142 #else
143 #define __aconst
144 #endif
145
146 /*
147 * Compile Time Assertion.
148 */
149 #ifdef __COUNTER__
150 #define __CTASSERT(x) __CTASSERT0(x, __ctassert, __COUNTER__)
151 #else
152 #define __CTASSERT(x) __CTASSERT99(x, __INCLUDE_LEVEL__, __LINE__)
153 #define __CTASSERT99(x, a, b) __CTASSERT0(x, __CONCAT(__ctassert,a), \
154 __CONCAT(_,b))
155 #endif
156 #define __CTASSERT0(x, y, z) __CTASSERT1(x, y, z)
157 #define __CTASSERT1(x, y, z) typedef char y ## z[/*CONSTCOND*/(x) ? 1 : -1] __unused
158
159 /*
160 * The following macro is used to remove const cast-away warnings
161 * from gcc -Wcast-qual; it should be used with caution because it
162 * can hide valid errors; in particular most valid uses are in
163 * situations where the API requires it, not to cast away string
164 * constants. We don't use *intptr_t on purpose here and we are
165 * explicit about unsigned long so that we don't have additional
166 * dependencies.
167 */
168 #define __UNCONST(a) ((void *)(unsigned long)(const void *)(a))
169
170 /*
171 * The following macro is used to remove the volatile cast-away warnings
172 * from gcc -Wcast-qual; as above it should be used with caution
173 * because it can hide valid errors or warnings. Valid uses include
174 * making it possible to pass a volatile pointer to memset().
175 * For the same reasons as above, we use unsigned long and not intptr_t.
176 */
177 #define __UNVOLATILE(a) ((void *)(unsigned long)(volatile void *)(a))
178
179 /*
180 * GCC2 provides __extension__ to suppress warnings for various GNU C
181 * language extensions under "-ansi -pedantic".
182 */
183 #if !__GNUC_PREREQ__(2, 0)
184 #define __extension__ /* delete __extension__ if non-gcc or gcc1 */
185 #endif
186
187 /*
188 * GCC1 and some versions of GCC2 declare dead (non-returning) and
189 * pure (no side effects) functions using "volatile" and "const";
190 * unfortunately, these then cause warnings under "-ansi -pedantic".
191 * GCC2 uses a new, peculiar __attribute__((attrs)) style. All of
192 * these work for GNU C++ (modulo a slight glitch in the C++ grammar
193 * in the distribution version of 2.5.5).
194 *
195 * GCC defines a pure function as depending only on its arguments and
196 * global variables. Typical examples are strlen and sqrt.
197 *
198 * GCC defines a const function as depending only on its arguments.
199 * Therefore calling a const function again with identical arguments
200 * will always produce the same result.
201 *
202 * Rounding modes for floating point operations are considered global
203 * variables and prevent sqrt from being a const function.
204 *
205 * Calls to const functions can be optimised away and moved around
206 * without limitations.
207 */
208 #if !__GNUC_PREREQ__(2, 0)
209 #define __attribute__(x)
210 #endif
211
212 #if __GNUC_PREREQ__(2, 5)
213 #define __dead __attribute__((__noreturn__))
214 #elif defined(__GNUC__)
215 #define __dead __volatile
216 #else
217 #define __dead
218 #endif
219
220 #if __GNUC_PREREQ__(2, 96)
221 #define __pure __attribute__((__pure__))
222 #elif defined(__GNUC__)
223 #define __pure __const
224 #else
225 #define __pure
226 #endif
227
228 #if __GNUC_PREREQ__(2, 5)
229 #define __constfunc __attribute__((__const__))
230 #else
231 #define __constfunc
232 #endif
233
234 #if __GNUC_PREREQ__(3, 0)
235 #define __noinline __attribute__((__noinline__))
236 #else
237 #define __noinline /* nothing */
238 #endif
239
240 #if __GNUC_PREREQ__(3, 0)
241 #define __always_inline __attribute__((__always_inline__))
242 #else
243 #define __always_inline /* nothing */
244 #endif
245
246 #if __GNUC_PREREQ__(4, 1)
247 #define __returns_twice __attribute__((__returns_twice__))
248 #else
249 #define __returns_twice /* nothing */
250 #endif
251
252 #if __GNUC_PREREQ__(4, 5)
253 #define __noclone __attribute__((__noclone__))
254 #else
255 #define __noclone /* nothing */
256 #endif
257
258 /*
259 * __unused: Note that item or function might be unused.
260 */
261 #if __GNUC_PREREQ__(2, 7)
262 #define __unused __attribute__((__unused__))
263 #else
264 #define __unused /* delete */
265 #endif
266
267 /*
268 * __used: Note that item is needed, even if it appears to be unused.
269 */
270 #if __GNUC_PREREQ__(3, 1)
271 #define __used __attribute__((__used__))
272 #else
273 #define __used __unused
274 #endif
275
276 /*
277 * __diagused: Note that item is used in diagnostic code, but may be
278 * unused in non-diagnostic code.
279 */
280 #if (defined(_KERNEL) && defined(DIAGNOSTIC)) \
281 || (!defined(_KERNEL) && !defined(NDEBUG))
282 #define __diagused /* empty */
283 #else
284 #define __diagused __unused
285 #endif
286
287 /*
288 * __debugused: Note that item is used in debug code, but may be
289 * unused in non-debug code.
290 */
291 #if defined(DEBUG)
292 #define __debugused /* empty */
293 #else
294 #define __debugused __unused
295 #endif
296
297 #if __GNUC_PREREQ__(3, 1)
298 #define __noprofile __attribute__((__no_instrument_function__))
299 #else
300 #define __noprofile /* nothing */
301 #endif
302
303 #if __GNUC_PREREQ__(4, 6) || defined(__clang__)
304 #define __unreachable() __builtin_unreachable()
305 #else
306 #define __unreachable() do {} while (/*CONSTCOND*/0)
307 #endif
308
309 #if defined(__cplusplus)
310 #define __BEGIN_EXTERN_C extern "C" {
311 #define __END_EXTERN_C }
312 #define __static_cast(x,y) static_cast<x>(y)
313 #else
314 #define __BEGIN_EXTERN_C
315 #define __END_EXTERN_C
316 #define __static_cast(x,y) (x)y
317 #endif
318
319 #if __GNUC_PREREQ__(4, 0)
320 # define __dso_public __attribute__((__visibility__("default")))
321 # define __dso_hidden __attribute__((__visibility__("hidden")))
322 # define __BEGIN_PUBLIC_DECLS \
323 _Pragma("GCC visibility push(default)") __BEGIN_EXTERN_C
324 # define __END_PUBLIC_DECLS __END_EXTERN_C _Pragma("GCC visibility pop")
325 # define __BEGIN_HIDDEN_DECLS \
326 _Pragma("GCC visibility push(hidden)") __BEGIN_EXTERN_C
327 # define __END_HIDDEN_DECLS __END_EXTERN_C _Pragma("GCC visibility pop")
328 #else
329 # define __dso_public
330 # define __dso_hidden
331 # define __BEGIN_PUBLIC_DECLS __BEGIN_EXTERN_C
332 # define __END_PUBLIC_DECLS __END_EXTERN_C
333 # define __BEGIN_HIDDEN_DECLS __BEGIN_EXTERN_C
334 # define __END_HIDDEN_DECLS __END_EXTERN_C
335 #endif
336 #if __GNUC_PREREQ__(4, 2)
337 # define __dso_protected __attribute__((__visibility__("protected")))
338 #else
339 # define __dso_protected
340 #endif
341
342 #define __BEGIN_DECLS __BEGIN_PUBLIC_DECLS
343 #define __END_DECLS __END_PUBLIC_DECLS
344
345 /*
346 * Non-static C99 inline functions are optional bodies. They don't
347 * create global symbols if not used, but can be replaced if desirable.
348 * This differs from the behavior of GCC before version 4.3. The nearest
349 * equivalent for older GCC is `extern inline'. For newer GCC, use the
350 * gnu_inline attribute additionally to get the old behavior.
351 *
352 * For C99 compilers other than GCC, the C99 behavior is expected.
353 */
354 #if defined(__GNUC__) && defined(__GNUC_STDC_INLINE__)
355 #define __c99inline extern __attribute__((__gnu_inline__)) __inline
356 #elif defined(__GNUC__)
357 #define __c99inline extern __inline
358 #elif defined(__STDC_VERSION__)
359 #define __c99inline __inline
360 #endif
361
362 #if defined(__lint__)
363 #define __packed __packed
364 #define __aligned(x) /* delete */
365 #define __section(x) /* delete */
366 #elif __GNUC_PREREQ__(2, 7) || defined(__PCC__)
367 #define __packed __attribute__((__packed__))
368 #define __aligned(x) __attribute__((__aligned__(x)))
369 #define __section(x) __attribute__((__section__(x)))
370 #elif defined(_MSC_VER)
371 #define __packed /* ignore */
372 #else
373 #define __packed error: no __packed for this compiler
374 #define __aligned(x) error: no __aligned for this compiler
375 #define __section(x) error: no __section for this compiler
376 #endif
377
378 /*
379 * C99 defines the restrict type qualifier keyword, which was made available
380 * in GCC 2.92.
381 */
382 #if defined(__lint__)
383 #define __restrict /* delete __restrict when not supported */
384 #elif __STDC_VERSION__ >= 199901L
385 #define __restrict restrict
386 #elif __GNUC_PREREQ__(2, 92)
387 #define __restrict __restrict__
388 #else
389 #define __restrict /* delete __restrict when not supported */
390 #endif
391
392 /*
393 * C99 defines __func__ predefined identifier, which was made available
394 * in GCC 2.95.
395 */
396 #if !(__STDC_VERSION__ >= 199901L)
397 #if __GNUC_PREREQ__(2, 6)
398 #define __func__ __PRETTY_FUNCTION__
399 #elif __GNUC_PREREQ__(2, 4)
400 #define __func__ __FUNCTION__
401 #else
402 #define __func__ ""
403 #endif
404 #endif /* !(__STDC_VERSION__ >= 199901L) */
405
406 #if defined(_KERNEL)
407 #if defined(NO_KERNEL_RCSIDS)
408 #undef __KERNEL_RCSID
409 #define __KERNEL_RCSID(_n, _s) /* nothing */
410 #endif /* NO_KERNEL_RCSIDS */
411 #endif /* _KERNEL */
412
413 #if !defined(_STANDALONE) && !defined(_KERNEL)
414 #if defined(__GNUC__) || defined(__PCC__)
415 #define __RENAME(x) ___RENAME(x)
416 #elif defined(__lint__)
417 #define __RENAME(x) __symbolrename(x)
418 #else
419 #error "No function renaming possible"
420 #endif /* __GNUC__ */
421 #else /* _STANDALONE || _KERNEL */
422 #define __RENAME(x) no renaming in kernel/standalone environment
423 #endif
424
425 /*
426 * A barrier to stop the optimizer from moving code or assume live
427 * register values. This is gcc specific, the version is more or less
428 * arbitrary, might work with older compilers.
429 */
430 #if __GNUC_PREREQ__(2, 95)
431 #define __insn_barrier() __asm __volatile("":::"memory")
432 #else
433 #define __insn_barrier() /* */
434 #endif
435
436 /*
437 * GNU C version 2.96 adds explicit branch prediction so that
438 * the CPU back-end can hint the processor and also so that
439 * code blocks can be reordered such that the predicted path
440 * sees a more linear flow, thus improving cache behavior, etc.
441 *
442 * The following two macros provide us with a way to use this
443 * compiler feature. Use __predict_true() if you expect the expression
444 * to evaluate to true, and __predict_false() if you expect the
445 * expression to evaluate to false.
446 *
447 * A few notes about usage:
448 *
449 * * Generally, __predict_false() error condition checks (unless
450 * you have some _strong_ reason to do otherwise, in which case
451 * document it), and/or __predict_true() `no-error' condition
452 * checks, assuming you want to optimize for the no-error case.
453 *
454 * * Other than that, if you don't know the likelihood of a test
455 * succeeding from empirical or other `hard' evidence, don't
456 * make predictions.
457 *
458 * * These are meant to be used in places that are run `a lot'.
459 * It is wasteful to make predictions in code that is run
460 * seldomly (e.g. at subsystem initialization time) as the
461 * basic block reordering that this affects can often generate
462 * larger code.
463 */
464 #if __GNUC_PREREQ__(2, 96)
465 #define __predict_true(exp) __builtin_expect((exp) != 0, 1)
466 #define __predict_false(exp) __builtin_expect((exp) != 0, 0)
467 #else
468 #define __predict_true(exp) (exp)
469 #define __predict_false(exp) (exp)
470 #endif
471
472 /*
473 * Compiler-dependent macros to declare that functions take printf-like
474 * or scanf-like arguments. They are null except for versions of gcc
475 * that are known to support the features properly (old versions of gcc-2
476 * didn't permit keeping the keywords out of the application namespace).
477 */
478 #if __GNUC_PREREQ__(2, 7)
479 #define __printflike(fmtarg, firstvararg) \
480 __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
481 #define __scanflike(fmtarg, firstvararg) \
482 __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
483 #define __format_arg(fmtarg) __attribute__((__format_arg__ (fmtarg)))
484 #else
485 #define __printflike(fmtarg, firstvararg) /* nothing */
486 #define __scanflike(fmtarg, firstvararg) /* nothing */
487 #define __format_arg(fmtarg) /* nothing */
488 #endif
489
490 /*
491 * Macros for manipulating "link sets". Link sets are arrays of pointers
492 * to objects, which are gathered up by the linker.
493 *
494 * Object format-specific code has provided us with the following macros:
495 *
496 * __link_set_add_text(set, sym)
497 * Add a reference to the .text symbol `sym' to `set'.
498 *
499 * __link_set_add_rodata(set, sym)
500 * Add a reference to the .rodata symbol `sym' to `set'.
501 *
502 * __link_set_add_data(set, sym)
503 * Add a reference to the .data symbol `sym' to `set'.
504 *
505 * __link_set_add_bss(set, sym)
506 * Add a reference to the .bss symbol `sym' to `set'.
507 *
508 * __link_set_decl(set, ptype)
509 * Provide an extern declaration of the set `set', which
510 * contains an array of pointers to type `ptype'. This
511 * macro must be used by any code which wishes to reference
512 * the elements of a link set.
513 *
514 * __link_set_start(set)
515 * This points to the first slot in the link set.
516 *
517 * __link_set_end(set)
518 * This points to the (non-existent) slot after the last
519 * entry in the link set.
520 *
521 * __link_set_count(set)
522 * Count the number of entries in link set `set'.
523 *
524 * In addition, we provide the following macros for accessing link sets:
525 *
526 * __link_set_foreach(pvar, set)
527 * Iterate over the link set `set'. Because a link set is
528 * an array of pointers, pvar must be declared as "type **pvar",
529 * and the actual entry accessed as "*pvar".
530 *
531 * __link_set_entry(set, idx)
532 * Access the link set entry at index `idx' from set `set'.
533 */
534 #define __link_set_foreach(pvar, set) \
535 for (pvar = __link_set_start(set); pvar < __link_set_end(set); pvar++)
536
537 #define __link_set_entry(set, idx) (__link_set_start(set)[idx])
538
539 /*
540 * Return the natural alignment in bytes for the given type
541 */
542 #if __GNUC_PREREQ__(4, 1)
543 #define __alignof(__t) __alignof__(__t)
544 #else
545 #define __alignof(__t) (sizeof(struct { char __x; __t __y; }) - sizeof(__t))
546 #endif
547
548 /*
549 * Return the number of elements in a statically-allocated array,
550 * __x.
551 */
552 #define __arraycount(__x) (sizeof(__x) / sizeof(__x[0]))
553
554 #ifndef __ASSEMBLER__
555 /* __BIT(n): nth bit, where __BIT(0) == 0x1. */
556 #define __BIT(__n) \
557 (((uintmax_t)(__n) >= NBBY * sizeof(uintmax_t)) ? 0 : ((uintmax_t)1 << (uintmax_t)((__n) & (NBBY * sizeof(uintmax_t) - 1))))
558
559 /* __BITS(m, n): bits m through n, m < n. */
560 #define __BITS(__m, __n) \
561 ((__BIT(MAX((__m), (__n)) + 1) - 1) ^ (__BIT(MIN((__m), (__n))) - 1))
562 #endif /* !__ASSEMBLER__ */
563
564 /* find least significant bit that is set */
565 #define __LOWEST_SET_BIT(__mask) ((((__mask) - 1) & (__mask)) ^ (__mask))
566
567 #define __PRIuBIT PRIuMAX
568 #define __PRIuBITS __PRIuBIT
569
570 #define __PRIxBIT PRIxMAX
571 #define __PRIxBITS __PRIxBIT
572
573 #define __SHIFTOUT(__x, __mask) (((__x) & (__mask)) / __LOWEST_SET_BIT(__mask))
574 #define __SHIFTIN(__x, __mask) ((__x) * __LOWEST_SET_BIT(__mask))
575 #define __SHIFTOUT_MASK(__mask) __SHIFTOUT((__mask), (__mask))
576
577 /*
578 * Only to be used in other headers that are included from both c or c++
579 * NOT to be used in code.
580 */
581 #ifdef __cplusplus
582 #define __CAST(__dt, __st) static_cast<__dt>(__st)
583 #else
584 #define __CAST(__dt, __st) ((__dt)(__st))
585 #endif
586
587 #define __CASTV(__dt, __st) __CAST(__dt, __CAST(void *, __st))
588 #define __CASTCV(__dt, __st) __CAST(__dt, __CAST(const void *, __st))
589
590 #define __USE(a) ((void)(a))
591
592 #define __type_mask(t) (/*LINTED*/sizeof(t) < sizeof(intmax_t) ? \
593 (~((1ULL << (sizeof(t) * NBBY)) - 1)) : 0ULL)
594
595 #ifndef __ASSEMBLER__
__zeroll(void)596 static __inline long long __zeroll(void) { return 0; }
__zeroull(void)597 static __inline unsigned long long __zeroull(void) { return 0; }
598 #else
599 #define __zeroll() (0LL)
600 #define __zeroull() (0ULL)
601 #endif
602
603 #define __negative_p(x) (!((x) > 0) && ((x) != 0))
604
605 #define __type_min_s(t) ((t)((1ULL << (sizeof(t) * NBBY - 1))))
606 #define __type_max_s(t) ((t)~((1ULL << (sizeof(t) * NBBY - 1))))
607 #define __type_min_u(t) ((t)0ULL)
608 #define __type_max_u(t) ((t)~0ULL)
609 #define __type_is_signed(t) (/*LINTED*/__type_min_s(t) + (t)1 < (t)1)
610 #define __type_min(t) (__type_is_signed(t) ? __type_min_s(t) : __type_min_u(t))
611 #define __type_max(t) (__type_is_signed(t) ? __type_max_s(t) : __type_max_u(t))
612
613
614 #define __type_fit_u(t, a) (/*LINTED*/!__negative_p(a) && \
615 (uintmax_t)((a) + __zeroull()) <= (uintmax_t)__type_max_u(t))
616
617 #define __type_fit_s(t, a) (/*LINTED*/__negative_p(a) ? \
618 ((intmax_t)((a) + __zeroll()) >= (intmax_t)__type_min_s(t)) : \
619 ((intmax_t)((a) + __zeroll()) >= (intmax_t)0 && \
620 (intmax_t)((a) + __zeroll()) <= (intmax_t)__type_max_s(t)))
621
622 /*
623 * return true if value 'a' fits in type 't'
624 */
625 #define __type_fit(t, a) (__type_is_signed(t) ? \
626 __type_fit_s(t, a) : __type_fit_u(t, a))
627
628 #endif /* !_SYS_CDEFS_H_ */
629