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Added (limited) support for implicit annotations.
[splint.git] / lib / ansi.h
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885824d3 1/*
2** ansi.h --- LCLint Standard C Library
3**
4** Process with -DSTRICT to get strict library.
5*/
6
7/*@-nextlinemacros@*/
8/*@+allimponly@*/
9/*@+globsimpmodifiesnothing@*/
10
11/*
12** errno.h
13*/
14
15/*@constant int EDOM;@*/
16/*@constant int ERANGE;@*/
17/*@constant int EILSEQ;@*/
18
19# ifdef STRICT
20/*@checkedstrict@*/ extern int errno;
21# else
22/*@unchecked@*/ extern int errno;
23# endif
24
25/*
26** types
27*/
28
29typedef /*@integraltype@*/ ptrdiff_t;
30typedef /*@unsignedintegraltype@*/ size_t;
31typedef /*@signedintegraltype@*/ ssize_t;
32typedef /*@integraltype@*/ wchar_t;
33
34/*
35** Added by Amendment 1 to ISO.
36*/
37
38typedef /*@integraltype@*/ wint_t;
39typedef /*@abstract@*/ mbstate_t;
40
41/*@constant null anytype NULL = 0;@*/
42
43/*
44** assert.h
45*/
46
47/*@constant lltX_bool NDEBUG;@*/
48
49# ifdef STRICT
50extern /*@falseexit@*/ void assert (/*@sef@*/ lltX_bool e)
51 /*@*/ ;
52# else
53extern /*@falseexit@*/ void assert (/*@sef@*/ lltX_bool /*@alt int@*/ e)
54 /*@*/ ;
55# endif
56
57
58/*
59** ctype.h
60*/
61
62# ifdef STRICT
d249c973 63extern lltX_bool isalnum (int c) /*@*/ ;
64extern lltX_bool isalpha (int c) /*@*/ ;
65extern lltX_bool iscntrl (int c) /*@*/ ;
66extern lltX_bool isdigit (int c) /*@*/ ;
67extern lltX_bool isgraph (int c) /*@*/ ;
68extern lltX_bool islower (int c) /*@*/ ;
69extern lltX_bool isprint (int c) /*@*/ ;
70extern lltX_bool ispunct (int c) /*@*/ ;
71extern lltX_bool isspace (int c) /*@*/ ;
72extern lltX_bool isupper (int c) /*@*/ ;
73extern lltX_bool isxdigit (int c) /*@*/ ;
74extern char tolower (int c) /*@*/ ;
75extern char toupper (int c) /*@*/ ;
885824d3 76# else
d249c973 77extern lltX_bool /*@alt int@*/ isalnum (int /*@alt unsigned char@*/ c) /*@*/ ;
78extern lltX_bool /*@alt int@*/ isalpha (int /*@alt unsigned char@*/ c) /*@*/ ;
79extern lltX_bool /*@alt int@*/ iscntrl (int /*@alt unsigned char@*/ c) /*@*/ ;
80extern lltX_bool /*@alt int@*/ isdigit (int /*@alt unsigned char@*/ c) /*@*/ ;
81extern lltX_bool /*@alt int@*/ isgraph (int /*@alt unsigned char@*/ c) /*@*/ ;
82extern lltX_bool /*@alt int@*/ islower (int /*@alt unsigned char@*/ c) /*@*/ ;
83extern lltX_bool /*@alt int@*/ isprint (int /*@alt unsigned char@*/ c) /*@*/ ;
84extern lltX_bool /*@alt int@*/ ispunct (int /*@alt unsigned char@*/ c) /*@*/ ;
85extern lltX_bool /*@alt int@*/ isspace (int /*@alt unsigned char@*/ c) /*@*/ ;
86extern lltX_bool /*@alt int@*/ isupper (int /*@alt unsigned char@*/ c) /*@*/ ;
87extern lltX_bool /*@alt int@*/ isxdigit (int /*@alt unsigned char@*/ c) /*@*/ ;
88extern char /*@alt int@*/ tolower (int /*@alt unsigned char@*/ c) /*@*/ ;
89extern char /*@alt int@*/ toupper (int /*@alt unsigned char@*/ c) /*@*/ ;
885824d3 90# endif
91
92/*
93** locale.h
94*/
95
96struct lconv
97{
98 char *decimal_point;
99 char *thousands_sep;
100 char *grouping;
101 char *int_curr_symbol;
102 char *currency_symbol;
103 char *mon_decimal_point;
104 char *mon_thousands_sep;
105 char *mon_grouping;
106 char *positive_sign;
107 char *negative_sign;
108 char int_frac_digits;
109 char frac_digits;
110 char p_cs_precedes;
111 char p_sep_by_space;
112 char n_cs_precedes;
113 char n_sep_by_space;
114 char p_sign_posn;
115 char n_sign_posn;
116} ;
117
118/*@constant int LC_ALL;@*/
119/*@constant int LC_COLLATE;@*/
120/*@constant int LC_CTYPE;@*/
121/*@constant int LC_MONETARY;@*/
122/*@constant int LC_NUMERIC;@*/
123/*@constant int LC_TIME;@*/
124
125extern /*@observer@*/ /*@null@*/ char *setlocale (int category, /*@null@*/ char *locale)
126 /*@modifies internalState, errno@*/ ;
127
128extern struct lconv *localeconv (void) /*@*/ ;
129
130/*
131** float.h
132*/
133
134/*
135** Note, these are defined by macros, but NOT necessarily
136** constants. They may be used as lvalues.
137*/
138
139/*@unchecked@*/ extern int DBL_DIG;
140/*@unchecked@*/ extern double DBL_EPSILON;
141/*@unchecked@*/ extern int DBL_MANT_DIG;
142/*@unchecked@*/ extern double DBL_MAX;
143/*@unchecked@*/ extern int DBL_MAX_10_EXP;
144/*@unchecked@*/ extern int DBL_MAX_EXP;
145/*@unchecked@*/ extern double DBL_MIN;
146/*@unchecked@*/ extern int DBL_MIN_10_EXP;
147/*@unchecked@*/ extern int DBL_MIN_EXP;
148
149/*@unchecked@*/ extern int FLT_DIG;
150/*@unchecked@*/ extern float FLT_EPSILON;
151/*@unchecked@*/ extern int FLT_MANT_DIG;
152/*@unchecked@*/ extern float FLT_MAX;
153/*@unchecked@*/ extern int FLT_MAX_10_EXP;
154/*@unchecked@*/ extern int FLT_MAX_EXP;
155/*@unchecked@*/ extern float FLT_MIN;
156/*@unchecked@*/ extern int FLT_MIN_10_EXP;
157/*@unchecked@*/ extern int FLT_MIN_EXP;
158/*@constant int FLT_RADIX@*/
159/*@unchecked@*/ extern int FLT_ROUNDS;
160
161/*@unchecked@*/ extern int LDBL_DIG;
162/*@unchecked@*/ extern long double LDBL_EPSILON;
163/*@unchecked@*/ extern int LDBL_MANT_DIG;
164/*@unchecked@*/ extern long double LDBL_MAX;
165/*@unchecked@*/ extern int LDBL_MAX_10_EXP;
166/*@unchecked@*/ extern int LDBL_MAX_EXP;
167/*@unchecked@*/ extern long double LDBL_MIN;
168/*@unchecked@*/ extern int LDBL_MIN_10_EXP;
169/*@unchecked@*/ extern int LDBL_MIN_EXP;
170
171/*
172** limits.h
173*/
174
175/*@constant int CHAR_BIT; @*/
176/*@constant char CHAR_MAX; @*/
177/*@constant char CHAR_MIN; @*/
178/*@constant int INT_MAX; @*/
179/*@constant int INT_MIN; @*/
180/*@constant long int LONG_MAX; @*/
181/*@constant long int LONG_MIN; @*/
182/*@constant long int MB_LEN_MAX@*/
183/*@constant signed char SCHAR_MAX; @*/
184/*@constant signed char SCHAR_MIN; @*/
185/*@constant short SHRT_MAX; @*/
186/*@constant short SHRT_MIN; @*/
187/*@constant unsigned char UCHAR_MAX; @*/
188/*@constant unsigned char UCHAR_MIN; @*/
189/*@constant unsigned int UINT_MAX; @*/
190/*@constant unsigned long ULONG_MAX; @*/
191/*@constant unsigned short USHRT_MAX; @*/
192
193/*
194** math.h
195*/
196
197/*@constant double HUGE_VAL; @*/
198
199/*
200** math functions that may have a range error modify errno
201*/
202
203extern double sin (double x) /*@*/ ;
204extern double cos (double x) /*@*/ ;
205extern double tan (double x) /*@*/ ;
206extern double asin (double x) /*@modifies errno@*/ ;
207extern double acos (double x) /*@modifies errno@*/ ;
208extern double atan (double x) /*@*/ ;
209extern double atan2 (double y, double x) /*@*/ ;
210extern double sinh (double x) /*@*/ ;
211extern double cosh (double x) /*@modifies errno@*/ ;
212extern double tanh (double x) /*@*/ ;
213
214extern double exp (double x) /*@modifies errno@*/ ;
215extern double ldexp (double x, int n) /*@modifies errno@*/ ;
216extern double frexp (double x, /*@out@*/ int *xp) /*@modifies *xp;@*/ ;
217
218extern double log (double x) /*@modifies errno@*/ ;
219extern double log10 (double x) /*@modifies errno@*/ ;
220
221extern double pow (double x, double y) /*@modifies errno@*/ ;
222extern double sqrt (double x) /*@modifies errno@*/ ;
223
224extern double ceil (double x) /*@*/ ;
225extern double floor (double x) /*@*/ ;
226extern double fabs (double x) /*@*/ ;
227
228double modf (double x, /*@out@*/ double *ip) /*@modifies *ip;@*/ ;
229double fmod (double x, double y) /*@*/ ;
230
231/*
232** These functions are optional in iso C. An implementation does not
233** have to provide them. They are included in comments here, but
234** are not required to be part of the standard library.
235*/
236
237# ifdef OPTIONAL_MATH
238
239extern float acosf (float x) /*@modifies errno@*/ ;
240extern long double acosl (long double x) /*@modifies errno@*/ ;
241extern float asinf (float x) /*@modifies errno@*/ ;
242extern long double asinl (long double x) /*@modifies errno@*/ ;
243extern float atanf (float x) /*@*/ ;
244extern long double atanl (long double x) /*@*/ ;
245extern float atan2f (float y, float x) /*@*/ ;
246extern long double atan2l (long double y, long double x) /*@*/ ;
247extern float ceilf (float x) /*@*/ ;
248extern long double ceill (long double x) /*@*/ ;
249extern float cosf (float x) /*@*/ ;
250extern long double cosl (long double x) /*@*/ ;
251extern float coshf (float x) /*@modifies errno@*/ ;
252extern long double coshl (long double x) /*@modifies errno@*/ ;
253extern float expf (float x) /*@modifies errno@*/ ;
254extern long double expl (long double x) /*@modifies errno@*/;
255extern float fabsf (float x) /*@*/ ;
256extern long double fabsl (long double x) /*@*/ ;
257extern float floorf (float x) /*@*/ ;
258extern long double floorl (long double x) /*@*/ ;
259extern float fmodf (float x, float y) /*@*/ ;
260extern long double fmodl (long double x, long double y) /*@*/ ;
261extern float frexpf (float x, /*@out@*/ int *xp) /*@modifies *xp@*/;
262extern long double frexpl (long double x, /*@out@*/ int *xp) /*@modifies *xp@*/;
263extern float ldexpf (float x, int n) /*@modifies errno@*/ ;
264extern long double ldexpl (long double x, int n) /*@modifies errno@*/ ;
265extern float logf (float x) /*@modifies errno@*/ ;
266extern long double logl (long double x) /*@modifies errno@*/ ;
267extern float log10f (float x) /*@modifies errno@*/;
268extern long double log10l (long double x) /*@modifies errno@*/;
269extern float modff (float x, /*@out@*/ float *xp) /*@modifies *xp@*/ ;
270extern long double modfl (long double x, /*@out@*/ long double *xp) /*@modifies *xp@*/ ;
271extern float powf (float x, float y) /*@modifies errno@*/ ;
272extern long double powl (long double x, long double y) /*@modifies errno@*/ ;
273extern float sinf (float x) /*@*/ ;
274extern long double sinl (long double x) /*@*/ ;
275extern float sinhf (float x) /*@*/ ;
276extern long double sinhl (long double x) /*@*/ ;
277extern float sqrtf (float x) /*@modifies errno@*/ ;
278extern long double sqrtl (long double x) /*@modifies errno@*/ ;
279extern float tanf (float x) /*@*/ ;
280extern long double tanl (long double x) /*@*/ ;
281extern float tanhf (float x) /*@*/ ;
282extern long double tanhl (long double x) /*@*/ ;
283
284# endif
285
286/*
287** setjmp.h
288*/
289
290typedef /*@abstract@*/ /*@mutable@*/ void *jmp_buf;
291
292extern int setjmp (/*@out@*/ jmp_buf env) /*@modifies env;@*/ ;
293extern /*@mayexit@*/ void longjmp (jmp_buf env, int val) /*@*/ ;
294
295/*
296** signal.h
297*/
298
299/*@constant int SIGABRT; @*/
300/*@constant int SIGFPE; @*/
301/*@constant int SIGILL; @*/
302/*@constant int SIGINT; @*/
303/*@constant int SIGSEGV; @*/
304/*@constant int SIGTERM; @*/
305
306typedef /*@integraltype@*/ sig_atomic_t;
307
308/*@constant void (*SIG_DFL)(int); @*/
309/*@constant void (*SIG_ERR)(int); @*/
310/*@constant void (*SIG_IGN)(int); @*/
311
312/*
313** signal takes an int, and a function takes int returns void, and
314** returns the function (or NULL if unsuccessful).
315*/
316
317extern /*@null@*/ void (*signal (int sig, /*@null@*/ void (*func)(int))) (int)
318 /*@modifies internalState, errno;@*/ ;
319
320extern /*@mayexit@*/ int raise (int sig) ;
321
322/*
323** stdarg.h
324*/
325
326typedef /*@abstract@*/ /*@mutable@*/ void *va_list;
327
328extern void va_start (/*@out@*/ va_list ap, ...) /*@modifies ap;@*/ ;
329extern void va_end (va_list va) /*@modifies va;@*/ ;
330
331/*
332** va_arg is builtin
333*/
334
335/*
336** stdio.h
337*/
338
339typedef /*@abstract@*/ /*@mutable@*/ void *FILE;
340typedef /*@abstract@*/ /*@mutable@*/ void *fpos_t;
341
342/*@constant int _IOFBF; @*/
343/*@constant int _IOLBF; @*/
344/*@constant int _IONBF; @*/
345
346/*@constant int BUFSIZ; @*/
347/*@constant int EOF; @*/
348
349/*@constant int FOPEN_MAX; @*/
350/*@constant int FILENAME_MAX; @*/
351
352/*@constant int L_tmpnam; @*/
353
354/*@constant int SEEK_CUR; @*/
355/*@constant int SEEK_END; @*/
356/*@constant int SEEK_SET; @*/
357
358/*@constant int TMP_MAX; @*/
359
360# ifdef STRICT
361/*@checked@*/ FILE *stderr;
362/*@checked@*/ FILE *stdin;
363/*@checked@*/ FILE *stdout;
364# else
365/*@unchecked@*/ FILE *stderr;
366/*@unchecked@*/ FILE *stdin;
367/*@unchecked@*/ FILE *stdout;
368# endif
369
370extern int remove (char *filename) /*@modifies fileSystem, errno@*/ ;
371extern int rename (char *old, char *new) /*@modifies fileSystem, errno@*/ ;
372
373extern /*@null@*/ FILE *tmpfile (void) /*@modifies fileSystem@*/ ;
374extern /*@observer@*/ char *
375 tmpnam (/*@out@*/ /*@null@*/ /*@returned@*/ char *s)
376 /*@modifies *s, internalState@*/ ;
377
378extern int fclose (FILE *stream) /*@modifies *stream, errno, fileSystem;@*/ ;
379extern int fflush (/*@null@*/ FILE *stream)
380 /*@modifies *stream, errno, fileSystem;@*/ ;
381
382extern /*@null@*/ /*@dependent@*/ FILE *fopen (char *filename, char *mode)
383 /*@modifies fileSystem@*/ ;
384
385extern /*@null@*/ FILE *freopen (char *filename, char *mode, FILE *stream)
386 /*@modifies *stream, fileSystem, errno@*/ ;
387
388extern void setbuf (FILE *stream, /*@null@*/ /*@exposed@*/ char *buf)
389 /*@modifies fileSystem, *stream, *buf@*/ ;
390
391extern int setvbuf (FILE *stream, /*@null@*/ /*@exposed@*/ char *buf,
392 int mode, size_t size)
393 /*@modifies fileSystem, *stream, *buf@*/ ;
394
395# ifdef STRICT
396/*@printflike@*/
397extern int fprintf (FILE *stream, char *format, ...)
398 /*@modifies fileSystem, *stream@*/ ;
399# else
400/*@printflike@*/
401extern int /*@alt void@*/ fprintf (FILE *stream, char *format, ...)
402 /*@modifies fileSystem, *stream@*/ ;
403# endif
404
405/*@scanflike@*/
406extern int fscanf (FILE *stream, char *format, ...)
407 /*@modifies fileSystem, *stream@*/ ;
408
409# ifdef STRICT
410/*@printflike@*/
411extern int printf (char *format, ...)
412 /*@globals stdout@*/
413 /*@modifies fileSystem, *stdout@*/ ;
414# else
415/*@printflike@*/
416extern int /*@alt void@*/ printf (char *format, ...)
417 /*@globals stdout@*/
418 /*@modifies fileSystem, *stdout@*/ ;
419# endif
420
421/*@scanflike@*/
422extern int scanf(char *format, ...)
423 /*@globals stdin@*/
424 /*@modifies fileSystem, *stdin@*/ ;
425
426# ifdef STRICT
427/*@printflike@*/
428extern int sprintf (/*@out@*/ char *s, char *format, ...)
429 /*@modifies *s@*/ ;
430# else
431/*@printflike@*/
432extern int /*@alt void@*/ sprintf (/*@out@*/ char *s, char *format, ...)
433 /*@modifies *s@*/ ;
434# endif
435
436/*@scanflike@*/
437int sscanf (/*@out@*/ char *s, char *format, ...) /*@*/ ;
438 /* modifies extra arguments */
439
440extern int vfprintf (FILE *stream, char *format, va_list arg)
441 /*@modifies fileSystem, *stream, arg, errno@*/ ;
442
443extern int vprintf (char *format, va_list arg)
444 /*@globals stdout@*/
445 /*@modifies fileSystem, arg, *stdout@*/ ;
446
447extern int vsprintf (/*@out@*/ char *s, char *format, va_list arg)
448 /*@modifies *s, arg@*/ ;
449
450extern int fgetc (FILE *stream)
451 /*@modifies fileSystem, *stream, errno@*/ ;
452
453extern /*@null@*/ char *
454 fgets (/*@returned@*/ /*@out@*/ char *s, int n, FILE *stream)
470b7798 455 /*@modifies fileSystem, *s, *stream, errno@*/
456 /*@bufferConstraint MaxSet(s) >= (n -1); @*/
457 /*@ensuresConstraint MaxRead(s) <= (n -1); MaxRead(s) >= 0; @*/
458 ;
885824d3 459
460extern int fputc (int /*@alt char@*/ c, FILE *stream)
461 /*@modifies fileSystem, *stream, errno@*/ ;
462
463extern int fputs (char *s, FILE *stream)
464 /*@modifies fileSystem, *stream@*/ ;
465
466/* note use of sef --- stream may be evaluated more than once */
467extern int getc (/*@sef@*/ FILE *stream)
468 /*@modifies fileSystem, *stream@*/ ;
469
470extern int getchar (void) /*@globals stdin@*/ /*@modifies fileSystem, *stdin@*/ ;
471
472extern /*@null@*/ char *gets (/*@out@*/ char *s)
473 /*@globals stdin@*/ /*@modifies fileSystem, *s, *stdin, errno@*/ ;
474
475extern int putc (int /*@alt char@*/ c, /*@sef@*/ FILE *stream)
476 /*@modifies fileSystem, *stream;@*/ ;
477
478extern int putchar (int /*@alt char@*/ c)
479 /*@globals stdout@*/ /*@modifies fileSystem, *stdout@*/ ;
480
481extern int puts (const char *s)
482 /*@globals stdout@*/ /*@modifies fileSystem, *stdout@*/ ;
483
484extern int ungetc (int /*@alt char@*/ c, FILE *stream)
485 /*@modifies fileSystem, *stream, errno@*/ ;
486
487extern size_t
488 fread (/*@out@*/ void *ptr, size_t size, size_t nobj, FILE *stream)
489 /*@modifies fileSystem, *ptr, *stream, errno@*/ ;
490
491extern size_t fwrite (void *ptr, size_t size, size_t nobj, FILE *stream)
492 /*@modifies fileSystem, *stream, errno@*/ ;
493
494extern int fgetpos (FILE *stream, /*@out@*/ fpos_t *pos)
495 /*@modifies *pos, errno@*/ ;
496
497extern int fseek (FILE *stream, long int offset, int whence)
498 /*@modifies fileSystem, *stream, errno@*/ ;
499
500extern int fsetpos (FILE *stream, fpos_t *pos)
501 /*@modifies fileSystem, *stream, errno@*/ ;
502
503extern long int ftell(FILE *stream) /*@modifies errno@*/ ;
504
505extern void rewind (FILE *stream) /*@modifies *stream@*/ ;
506extern void clearerr (FILE *stream) /*@modifies *stream@*/ ;
507
508extern int feof (FILE *stream) /*@modifies errno@*/ ;
509extern int ferror (FILE *stream) /*@modifies errno@*/ ;
510
511extern void perror (/*@null@*/ char *s)
512 /*@globals errno, stderr@*/ /*@modifies fileSystem, *stderr@*/ ;
513
514/*
515** stdlib.h
516*/
517
518extern double atof (char *s) /*@*/ ;
519extern int atoi (char *s) /*@*/ ;
520extern long int atol (char *s) /*@*/ ;
521
522extern double strtod (char *s, /*@null@*/ /*@out@*/ char **endp)
523 /*@modifies *endp, errno@*/ ;
524
525extern long strtol (char *s, /*@null@*/ /*@out@*/ char **endp, int base)
526 /*@modifies *endp, errno@*/ ;
527
528extern unsigned long
529 strtoul (char *s, /*@null@*/ /*@out@*/ char **endp, int base)
530 /*@modifies *endp, errno@*/ ;
531
532/*@constant int RAND_MAX; @*/
533extern int rand (void) /*@modifies internalState@*/ ;
534extern void srand (unsigned int seed) /*@modifies internalState@*/ ;
535
470b7798 536/*
537 drl
538 changed 12/29/2000
539*/
885824d3 540
470b7798 541extern /*@null@*/ /*@only@*/ void *calloc (size_t nobj, size_t size) /*@*/
542 /*@ensuresConstraint MaxSet(result) == nobj; @*/ ;
543extern /*@null@*/ /*@out@*/ /*@only@*/ void *malloc (size_t size) /*@*/
544 /*@ensuresConstraint MaxSet(result) == size; @*/ ;
545
546/*end drl changed */
547
885824d3 548/* 11 June 1997: removed out on return value */
549
550# if 0
551extern /*@null@*/ /*@only@*/ void *
552 realloc (/*@null@*/ /*@only@*/ /*@special@*/ void *p,
553 size_t size) /*@releases p@*/ /*@modifies *p@*/ ;
554# endif
555
556/*
557** LCLint annotations cannot fully describe realloc. The semantics we
558** want are:
559** realloc returns null: ownership of parameter is not changed
560** realloc returns non-null: ownership of parameter is transferred to return value
561**
562** Otherwise, storage is in the same state before and after the call.
563*/
564
565extern /*@null@*/ /*@only@*/ void *
566 realloc (/*@null@*/ /*@only@*/ /*@out@*/ /*@returned@*/ void *p, size_t size)
567 /*@modifies *p @*/;
568
569extern void free (/*@null@*/ /*@out@*/ /*@only@*/ void *p) /*@modifies *p@*/ ;
570
571/*@constant int EXIT_FAILURE; @*/
572/*@constant int EXIT_SUCCESS; @*/
573
574extern /*@exits@*/ void abort (void) /*@*/ ;
575extern /*@exits@*/ void exit (int status) /*@*/ ;
576extern int atexit (void (*func)(void)) /*@modifies internalState@*/ ;
577
578extern /*@observer@*/ /*@null@*/ char *getenv (char *name) /*@*/ ;
579
580extern int system (/*@null@*/ char *s) /*@modifies fileSystem@*/ ;
581
582extern /*@null@*/ /*@dependent@*/ void *
583 bsearch (void *key, void *base,
584 size_t n, size_t size,
585 int (*compar)(void *, void *)) /*@*/ ;
586
587extern void qsort (void *base, size_t n, size_t size,
588 int (*compar)(void *, void *))
589 /*@modifies *base, errno@*/ ;
590
591extern int abs (int n) /*@*/ ;
592
593typedef /*@concrete@*/ struct
594{
595 int quot;
596 int rem;
597} div_t ;
598
599extern div_t div (int num, int denom) /*@*/ ;
600
601extern long int labs (long int n) /*@*/ ;
602
603typedef /*@concrete@*/ struct
604{
605 long int quot;
606 long int rem;
607} ldiv_t ;
608
609extern ldiv_t ldiv (long num, long denom) /*@*/ ;
610
611/*@constant size_t MB_CUR_MAX; @*/
612
613/*
614** wchar_t and wint_t functions added by Amendment 1 to ISO.
615*/
616
617/*@constant int WCHAR_MAX@*/
618/*@constant int WCHAR_MIN@*/
619/*@constant wint_t WEOF@*/
620
621extern wint_t btowc (int c) /*@*/ ;
622
623extern wint_t fgetwc (FILE *fp) /*@modifies fileSystem, *fp*/ ;
624
625extern /*@null@*/ wchar_t *fgetws (/*@returned@*/ wchar_t *s, int n, FILE *stream)
626 /*@modifies fileSystem, *s, *stream@*/;
627
628extern wint_t fputwc (wchar_t c, FILE *stream)
629 /*@modifies fileSystem, *stream@*/;
630
631extern int fputws (const wchar_t *s, FILE *stream)
632 /*@modifies fileSystem, *stream@*/ ;
633
634extern int fwide (FILE *stream, int mode) /*@*/ ;
635 /* does not modify the stream */
636
637/*@printflike@*/ extern int fwprintf (FILE *stream, const wchar_t *format, ...)
638 /*@modifies *stream, fileSystem@*/ ;
639
640/*@scanflike@*/ extern int fwscanf (FILE *stream, const wchar_t *format, ...)
641 /*@modifies *stream, fileSystem@*/ ;
642
643/* note use of sef --- stream may be evaluated more than once */
644extern wint_t getwc (/*@sef@*/ FILE *stream) /*@modifies fileSystem, *stream@*/ ;
645
646extern wint_t getwchar (void) /*@modifies fileSystem, *stdin@*/;
647
648extern size_t mbrlen (const char *s, size_t n, /*@null@*/ mbstate_t *ps) /*@*/ ;
649
650extern size_t mbrtowc (/*@null@*/ wchar_t *pwc, const char *s, size_t n,
651 /*@null@*/ mbstate_t *ps)
652 /*@modifies *pwc@*/ ;
653
654extern int mbsinit (/*@null@*/ const mbstate_t *ps) /*@*/ ;
655
656extern size_t mbsrtowcs (/*@null@*/ wchar_t *dst, const char **src, size_t len,
657 /*@null@*/ mbstate_t *ps)
658 /*@modifies *dst@*/ ;
659
660/* note use of sef --- stream may be evaluated more than once */
661extern wint_t putwc (wchar_t c, /*@sef@*/ FILE *stream) /*@modifies fileSystem, *stream@*/ ;
662
663extern wint_t putwchar (wchar_t c) /*@modifies fileSystem, *stdout@*/ ;
664
665/*@printflike@*/ extern int swprintf (wchar_t *s, size_t n, const wchar_t *format, ...)
666 /*@modifies *s@*/ ;
667
668/*@scanflike@*/ extern int swscanf (const wchar_t *s, const wchar_t *format, ...)
669 /*@modifies *stdin@*/ ;
670
671extern wint_t ungetwc (wint_t c, FILE *stream) /*@modifies fileSystem, *stream@*/ ;
672
673extern int vfwprintf (FILE *stream, const wchar_t *format, va_list arg)
674 /*@modifies fileSystem, *stream@*/ ;
675
676extern int vswprintf (wchar_t *s, size_t n, const wchar_t *format, va_list arg)
677 /*@modifies *s@*/ ;
678
679extern int vwprintf (const wchar_t *format, va_list arg)
680 /*@modifies fileSystem, *stdout@*/ ;
681
682extern size_t wcrtomb (/*@null@*/ /*@out@*/ char *s, wchar_t wc, /*@null@*/ mbstate_t *ps)
683 /*@modifies *s@*/;
684
685extern void /*@alt wchar_t *@*/
686 wcscat (/*@unique@*/ /*@returned@*/ /*@out@*/ wchar_t *s1, const wchar_t *s2)
687 /*@modifies *s1@*/ ;
688
689extern /*@exposed@*/ /*@null@*/ wchar_t *
690 wcschr (/*@returned@*/ const wchar_t *s, wchar_t c)
691 /*@*/ ;
692
693extern int wcscmp (const wchar_t *s1, const wchar_t *s2) /*@*/ ;
694
695extern int wcscoll (const wchar_t *s1, const wchar_t *s2) /*@*/ ;
696
697extern void /*@alt wchar_t *@*/
698 wcscpy (/*@unique@*/ /*@out@*/ /*@returned@*/ wchar_t *s1, const wchar_t *s2)
699 /*@modifies *s1@*/ ;
700
701extern size_t wcscspn (const wchar_t *s1, const wchar_t *s2) /*@*/ ;
702
703extern size_t wcsftime (/*@out@*/ wchar_t *s, size_t maxsize, const wchar_t *format,
704 const struct tm *timeptr)
705 /*@modifies *s@*/ ;
706
707extern size_t wcslen (const wchar_t *s) /*@*/ ;
708
709extern void /*@alt wchar_t *@*/
710 wcsncat (/*@unique@*/ /*@returned@*/ /*@out@*/ wchar_t *s1, const wchar_t *s2,
711 size_t n)
712 /*@modifies *s1@*/ ;
713
714extern int wcsncmp (const wchar_t *s1, const wchar_t *s2, size_t n) /*@*/ ;
715
716extern void /*@alt wchar_t *@*/
717 wcsncpy (/*@unique@*/ /*@returned@*/ /*@out@*/ wchar_t *s1, const wchar_t *s2,
718 size_t n)
719 /*@modifies *s1@*/ ;
720
721extern /*@null@*/ wchar_t *
722 wcspbrk (/*@returned@*/ const wchar_t *s1, const wchar_t *s2)
723 /*@*/ ;
724
725extern /*@null@*/ wchar_t *
726 wcsrchr (/*@returned@*/ const wchar_t *s, wchar_t c)
727 /*@*/ ;
728
729extern size_t
730 wcsrtombs (/*@null@*/ char *dst, const wchar_t **src, size_t len,
731 /*@null@*/ mbstate_t *ps)
732 /*@modifies *src@*/ ;
733
734extern size_t wcsspn (const wchar_t *s1, const wchar_t *s2) /*@*/ ;
735
736extern /*@null@*/ wchar_t *wcsstr (const wchar_t *s1, const wchar_t *s2) /*@*/ ;
737
738extern double wcstod (const wchar_t *nptr, /*@null@*/ wchar_t **endptr)
739 /*@modifies *endptr@*/ ;
740
741extern /*@null@*/ wchar_t *
742 wcstok (/*@null@*/ wchar_t *s1, const wchar_t *s2, wchar_t **ptr)
743 /*@modifies *ptr@*/;
744
745extern long wcstol (const wchar_t *nptr, /*@null@*/ wchar_t **endptr, int base)
746 /*@modifies *endptr@*/;
747
748extern unsigned long
749 wcstoul (const wchar_t *nptr, /*@null@*/ wchar_t **endptr, int base)
750 /*@modifies *endptr@*/;
751
752extern size_t
753 wcsxfrm (/*@null@*/ wchar_t *s1, const wchar_t *s2, size_t n)
754 /*@modifies *s1@*/;
755
756extern int wctob (wint_t c) /*@*/;
757
758extern /*@null@*/ wchar_t *wmemchr (const wchar_t *s, wchar_t c, size_t n) /*@*/ ;
759
760extern int wmemcmp (const wchar_t *s1, const wchar_t *s2, size_t n) /*@*/ ;
761
762extern wchar_t *wmemcpy (/*@returned@*/ wchar_t *s1, const wchar_t *s2, size_t n)
763 /*@modifies *s1@*/;
764
765extern wchar_t *wmemmove (/*@returned@*/ wchar_t *s1, const wchar_t *s2, size_t n)
766 /*@modifies *s1@*/;
767
768extern wchar_t *wmemset (/*@returned@*/ wchar_t *s, wchar_t c, size_t n)
769 /*@modifies *s@*/;
770
771/*@printflike@*/ extern int wprintf (const wchar_t *format, ...)
772 /*@globals stdout@*/ /*@modifies errno, *stdout@*/;
773
774/*@scanflike@*/ extern int
775 wscanf (const wchar_t *format, ...)
776 /*@globals stdin@*/ /*@modifies errno, *stdin@*/;
777
778/*
779** wctype.h (added by Amendment 1)
780*/
781
782/* Warning: not sure about these (maybe abstract?): */
783typedef /*@integraltype@*/ wctype_t;
784typedef /*@integraltype@*/ wctrans_t;
785
786# ifdef STRICT
787extern lltX_bool iswalnum (wint_t c) /*@*/ ;
788extern lltX_bool iswalpha (wint_t c) /*@*/ ;
789extern lltX_bool iswcntrl (wint_t c) /*@*/ ;
790extern lltX_bool iswctype (wint_t c, wctype_t ctg) /*@*/ ;
791extern lltX_bool iswdigit (wint_t c) /*@*/ ;
792extern lltX_bool iswgraph (wint_t c) /*@*/ ;
793extern lltX_bool iswlower (wint_t c) /*@*/ ;
794extern lltX_bool iswprint (wint_t c) /*@*/ ;
795extern lltX_bool iswpunct (wint_t c) /*@*/ ;
796extern lltX_bool iswspace (wint_t c) /*@*/ ;
797extern lltX_bool iswupper (wint_t c) /*@*/ ;
798extern lltX_bool iswxdigit (wint_t c) /*@*/ ;
799
800extern wint_t towctrans (wint_t c, wctrans_t ctg) /*@*/ ;
801extern wint_t towlower (wint_t c) /*@*/ ;
802extern wint_t towupper (wint_t c) /*@*/ ;
803# else
804extern lltX_bool /*@alt int@*/ iswalnum (wint_t c) /*@*/ ;
805extern lltX_bool /*@alt int@*/ iswalpha (wint_t c) /*@*/ ;
806extern lltX_bool /*@alt int@*/ iswcntrl (wint_t c) /*@*/ ;
807extern lltX_bool /*@alt int@*/ iswctype (wint_t c, wctype_t ctg) /*@*/ ;
808extern lltX_bool /*@alt int@*/ iswdigit (wint_t c) /*@*/ ;
809extern lltX_bool /*@alt int@*/ iswgraph (wint_t c) /*@*/ ;
810extern lltX_bool /*@alt int@*/ iswlower (wint_t c) /*@*/ ;
811extern lltX_bool /*@alt int@*/ iswprint (wint_t c) /*@*/ ;
812extern lltX_bool /*@alt int@*/ iswpunct (wint_t c) /*@*/ ;
813extern lltX_bool /*@alt int@*/ iswspace (wint_t c) /*@*/ ;
814extern lltX_bool /*@alt int@*/ iswupper (wint_t c) /*@*/ ;
815extern lltX_bool /*@alt int@*/ iswxdigit (wint_t c) /*@*/ ;
816
817extern wint_t /*@alt int@*/ towctrans (wint_t c, wctrans_t ctg) /*@*/ ;
818extern wint_t /*@alt int@*/ towlower (wint_t c) /*@*/ ;
819extern wint_t /*@alt int@*/ towupper (wint_t c) /*@*/ ;
820# endif
821
822extern wctrans_t wctrans (const char *property) /*@*/ ;
823extern wctype_t wctype (const char *property) /*@*/ ;
824
825extern int mblen (char *s, size_t n) /*@*/ ;
826extern int mbtowc (/*@null@*/ wchar_t *pwc, /*@null@*/ char *s, size_t n)
827 /*@modifies *pwc@*/ ;
828extern int wctomb (/*@out@*/ /*@null@*/ char *s, wchar_t wchar)
829 /*@modifies *s@*/ ;
830extern size_t mbstowcs (/*@out@*/ wchar_t *pwcs, char *s, size_t n)
831 /*@modifies *pwcs@*/ ;
832extern size_t wcstombs (/*@out@*/ char *s, wchar_t *pwcs, size_t n)
833 /*@modifies *s@*/ ;
834
835/*
836** string.h
837*/
838
839extern void /*@alt void * @*/
840 memcpy (/*@unique@*/ /*@returned@*/ /*@out@*/ void *s1, void *s2, size_t n)
470b7798 841 /*@modifies *s1@*/
842 /*@bufferConstraint MaxRead(s2) >= n; MaxSet(s1) >= n; @*/
843 ;
885824d3 844
845extern void /*@alt void * @*/
846 memmove (/*@returned@*/ /*@out@*/ void *s1, void *s2, size_t n)
470b7798 847 /*@modifies *s1@*/
848 /*@bufferConstraint MaxRead(s2) >= n; MaxSet(s1) >= n; @*/
849 ;
850
851
852 /* drl
853 modifed 12/29/2000
854 */
855 /* removed returned */
885824d3 856extern void /*@alt char * @*/
470b7798 857 strcpy (/*@unique@*/ /*@out@*/ /*returned*/ char *s1, char *s2)
858 /*@modifies *s1@*/ /*@bufferConstraint MaxSet(s1) >= MaxRead(s2); @*/ /*@ensuresConstraint MaxRead(s1) == MaxRead (s2); MaxRead(result) == MaxRead(s2); MaxSet(result) == MaxSet(s1); @*/;
885824d3 859
860extern void /*@alt char * @*/
470b7798 861 strncpy (/*@unique@*/ /*@out@*/ /*returned*/ char *s1, char *s2, size_t n)
862 /*@modifies *s1@*/ /*@bufferConstraint MaxSet(s1) >= ( n - 1 ); @*/ /*@ensuresConstraint MaxRead (s2) >= MaxRead(s1); MaxRead (s1) <= n; @*/;
885824d3 863
864extern void /*@alt char * @*/
470b7798 865 strcat (/*@unique@*/ /*returned*/ /*@out@*/ char *s1, char *s2)
866 /*@modifies *s1@*/ /*@bufferConstraint MaxSet(s1) >= (MaxRead(s1) + MaxRead(s2) ); */ /*ensuresConstraint MaxRead(result) = (MaxRead(s1) + MaxRead(s2) );@*/;
885824d3 867
868extern void /*@alt char * @*/
470b7798 869 strncat (/*@unique@*/ /*returned*/ /*@out@*/ char *s1, char *s2, int n)
870 /*@modifies *s1@*/ /*@bufferConstraint MaxSet(s1) >= ( MaxRead(s1) + n); @*/ /*@ensuresConstraint MaxRead(result) >= (MaxRead(s1) + n); @*/;
885824d3 871
470b7798 872 /*drl end*/
873
885824d3 874extern int memcmp (void *s1, void *s2, size_t n) /*@*/ ;
875extern int strcmp (char *s1, char *s2) /*@*/ ;
876extern int strcoll (char *s1, char *s2) /*@*/ ;
877extern int strncmp (char *s1, char *s2, size_t n) /*@*/ ;
878extern size_t strxfrm (/*@out@*/ /*@null@*/ char *s1, char *s2, size_t n)
879 /*@modifies *s1@*/ ; /* s1 may be null only if n == 0 */
880
881extern /*@null@*/ void *memchr (void *s, int c, size_t n) /*@*/ ;
882
883# ifdef STRICT
884extern /*@exposed@*/ /*@null@*/ char *
470b7798 885strchr (char *s, char c) /*@*//*@ensuresConstraint MaxSet(result) >= 0; MaxSet(result) <= MaxRead(s); MaxRead (result) <= MaxRead(s); MaxRead(result) >= 0; @*/ ;
885824d3 886# else
887extern /*@exposed@*/ /*@null@*/ char *
470b7798 888 strchr ( char *s, int /*@alt char@*/ c) /*@*/ /*@ensuresConstraint MaxSet(result) >= 0; MaxSet(result) <= MaxRead(s); MaxRead (result) <= MaxRead(s); MaxRead(result) >= 0; @*/ ;
885824d3 889# endif
890
891extern size_t strcspn (char *s1, char *s2) /*@*/ ;
892extern /*@null@*/ /*@exposed@*/ char *
893 strpbrk (/*@returned@*/ char *s, char *t) /*@*/ ;
894
895# ifdef STRICT
896extern /*@null@*/ /*@exposed@*/ char *
470b7798 897 strrchr (/*@returned@*/ char *s, char c) /*@*/ /*@ensuresConstraint MaxSet(result) >= 0; MaxSet(result) <= MaxRead(s); MaxRead (result) <= MaxRead(s); MaxRead(result) >= 0; @*/;
885824d3 898# else
899extern /*@null@*/ /*@exposed@*/ char *
470b7798 900 strrchr (/*@returned@*/ char *s, int /*@alt char@*/ c) /*@*/ /*@ensuresConstraint MaxSet(result) >= 0; MaxSet(result) <= MaxRead(s); MaxRead (result) <= MaxRead(s); MaxRead(result) >= 0; @*/;
885824d3 901# endif
902
903extern size_t strspn (char *s, char *t) /*@*/ ;
470b7798 904
885824d3 905extern /*@null@*/ /*@exposed@*/ char *
470b7798 906 strstr (/*@returned@*/ /*@unique@*/ char *s, char *t) /*@*/
907/*@ensuresConstraint MaxSet(result) >= 0; MaxSet(result) <= MaxRead(s); MaxRead (result) <= MaxRead(s); MaxRead(result) >= 0; @*/;
908
885824d3 909extern /*@null@*/ /*@exposed@*/ char *
910 strtok (/*@returned@*/ /*@null@*/ char *s, char *t)
911 /*@modifies *s, internalState, errno@*/ ;
912
913extern void /*@alt void *@*/ memset (/*@out@*/ /*@returned@*/ void *s,
914 int c, size_t n)
915 /*@modifies *s@*/ ;
916
917extern /*@observer@*/ char *strerror (int errnum) /*@*/ ;
918
470b7798 919/*drl */
920extern size_t strlen (char *s) /*@*/ /*@ensuresConstraint result == MaxRead(s); @*/;
885824d3 921
922/*
923** time.h
924*/
925
926/*@constant int CLOCKS_PER_SEC;@*/
927
928typedef /*@integraltype@*/ clock_t;
929typedef /*@integraltype@*/ time_t;
930
931struct tm
932 {
933 int tm_sec;
934 int tm_min;
935 int tm_hour;
936 int tm_mday;
937 int tm_mon;
938 int tm_year;
939 int tm_wday;
940 int tm_yday;
941 int tm_isdst;
942 } ;
943
944extern clock_t clock (void) /*@modifies internalState@*/ ;
945extern double difftime (time_t time1, time_t time0) /*@*/ ;
946extern time_t mktime (struct tm *timeptr) /*@*/ ;
947
948extern time_t time (/*@null@*/ /*@out@*/ time_t *tp)
949 /*@modifies *tp@*/ ;
950
951extern /*@observer@*/ char *asctime (struct tm *timeptr)
470b7798 952 /*@modifies errno*/ /*@ensuresConstraint MaxSet(result) == 25; MaxRead(result) == 25; @*/ ;
885824d3 953
470b7798 954extern /*@observer@*/ char *ctime (time_t *tp) /*@*/
955 /*@ensuresConstraint MaxSet(result) == 25; MaxRead(result) == 25; @*/;
885824d3 956
957extern /*@null@*/ /*@observer@*/ struct tm *gmtime (time_t *tp) /*@*/ ;
958
959extern /*@null@*/ /*@observer@*/ struct tm *localtime (time_t *tp)
960 /*@modifies errno@*/ ;
961
962extern size_t strftime (/*@out@*/ char *s, size_t smax,
963 char *fmt, struct tm *timeptr)
964 /*@modifies *s@*/ ;
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