lib.t

操作系统设计与实现源码

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.Op 1 src/lib/ansi/ext_fmt.h

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			src/lib/ansi/ext_fmt.h	 	 
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00000	struct mantissa {
00001	        unsigned long h_32;
00002	        unsigned long l_32;
00003	};
00004	
00005	struct EXTEND {
00006	        short   sign;
00007	        short   exp;
00008	        struct mantissa mantissa;
00009	#define m1 mantissa.h_32
00010	#define m2 mantissa.l_32
00011	};
00012	        



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			src/lib/ansi/loc_time.h	 	 
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00100	/*
00101	 * loc_time.h - some local definitions
00102	 */
00103	/* $Header: loc_time.h,v 1.1 91/04/22 13:19:51 ceriel Exp $ */
00104	
00105	#define YEAR0           1900                    /* the first year */
00106	#define EPOCH_YR        1970            /* EPOCH = Jan 1 1970 00:00:00 */
00107	#define SECS_DAY        (24L * 60L * 60L)
00108	#define LEAPYEAR(year)  (!((year) % 4) && (((year) % 100) || !((year) % 400)))
00109	#define YEARSIZE(year)  (LEAPYEAR(year) ? 366 : 365)
00110	#define FIRSTSUNDAY(timp)       (((timp)->tm_yday - (timp)->tm_wday + 420) % 7)
00111	#define FIRSTDAYOF(timp)        (((timp)->tm_wday - (timp)->tm_yday + 420) % 7)
00112	#define TIME_MAX        ULONG_MAX
00113	#define ABB_LEN         3
00114	
00115	extern const int _ytab[2][12];
00116	extern const char *_days[];
00117	extern const char *_months[];
00118	
00119	void _tzset(void);
00120	unsigned _dstget(struct tm *timep);
00121	
00122	extern long _timezone;
00123	extern long _dst_off;
00124	extern int _daylight;
00125	extern char *_tzname[2];
.Ep 2 src/lib/ansi/abort.c

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			src/lib/ansi/abort.c	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

00200	/*
00201	 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
00202	 * See the copyright notice in the ACK home directory, in the file "Copyright".
00203	 */
00204	/* $Header: abort.c,v 1.3 90/11/22 13:59:37 eck Exp $ */
00205	
00206	#if     defined(_POSIX_SOURCE)
00207	#include        <sys/types.h>
00208	#endif
00209	#include        <signal.h>
00210	#include        <stdlib.h>
00211	
00212	extern void (*_clean)(void);
00213	
00214	void
00215	abort(void)
00216	{
00217	        if (_clean) _clean();           /* flush all output files */
00218	        raise(SIGABRT);
00219	}
	





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			src/lib/ansi/abs.c	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

00300	/*
00301	 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
00302	 * See the copyright notice in the ACK home directory, in the file "Copyright".
00303	 */
00304	/* $Header: abs.c,v 1.1 89/05/16 13:06:59 eck Exp $ */
00305	
00306	#include        <stdlib.h>
00307	
00308	int
00309	abs(register int i)
00310	{
00311	        return i >= 0 ? i : -i;
00312	}
.Op 3 src/lib/ansi/asctime.c

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			src/lib/ansi/asctime.c	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

00400	/*
00401	 * asctime - print a date
00402	 */
00403	/* $Header: asctime.c,v 1.3 91/04/22 13:20:15 ceriel Exp $ */
00404	
00405	#include        <string.h>
00406	#include        <time.h>
00407	#include        "loc_time.h"
00408	
00409	#define DATE_STR        "??? ??? ?? ??:??:?? ????\n"
00410	
00411	static char *
00412	two_digits(register char *pb, int i, int nospace)
00413	{
00414	        *pb = (i / 10) % 10 + '0';
00415	        if (!nospace && *pb == '0') *pb = ' ';
00416	        pb++;
00417	        *pb++ = (i % 10) + '0';
00418	        return ++pb;
00419	}
	
00421	static char *
00422	four_digits(register char *pb, int i)
00423	{
00424	        i %= 10000;
00425	        *pb++ = (i / 1000) + '0';
00426	        i %= 1000;
00427	        *pb++ = (i / 100) + '0';
00428	        i %= 100;
00429	        *pb++ = (i / 10) + '0';
00430	        *pb++ = (i % 10) + '0';
00431	        return ++pb;
00432	}
	
00434	char *asctime(const struct tm *timeptr)
00435	{
00436	        static char buf[26];
00437	        register char *pb = buf;
00438	        register const char *ps;
00439	        register int n;
00440	
00441	        strcpy(pb, DATE_STR);
00442	        ps = _days[timeptr->tm_wday];
00443	        n = ABB_LEN;
00444	        while(--n >= 0) *pb++ = *ps++;
00445	        pb++;
00446	        ps = _months[timeptr->tm_mon];
00447	        n = ABB_LEN;
00448	        while(--n >= 0) *pb++ = *ps++;
00449	        pb++;
00450	        pb = two_digits(
00451	                    two_digits(
00452	                            two_digits(two_digits(pb, timeptr->tm_mday, 0)
00453	                                        , timeptr->tm_hour, 1)
00454	                            , timeptr->tm_min, 1)
.Ep 4 src/lib/ansi/asctime.c
00455	                    , timeptr->tm_sec, 1);
00456	
00457	        four_digits(pb, timeptr->tm_year + 1900);
00458	        return buf;
00459	}






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			src/lib/ansi/assert.c	 	 
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00500	/*
00501	 * assert.c - diagnostics
00502	 */
00503	/* $Header: assert.c,v 1.3 90/04/03 15:01:58 eck Exp $ */
00504	
00505	#include        <assert.h>
00506	#include        <stdio.h>
00507	#include        <stdlib.h>
00508	
00509	void __bad_assertion(const char *mess) {
00510	
00511	        fputs(mess, stderr);
00512	        abort();
00513	}


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
			src/lib/ansi/atexit.c	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

00600	/* $Header: atexit.c,v 1.1 89/12/18 15:11:09 eck Exp $ */
00601	
00602	#include        <stdlib.h>
00603	
00604	#define NEXITS  32
00605	
00606	extern void (*__functab[NEXITS])(void);
00607	extern int __funccnt;
00608	
00609	int
00610	atexit(void (*func)(void))
00611	{
00612	        if (__funccnt >= NEXITS)
00613	                return 1;
00614	        __functab[__funccnt++] = func;
00615	        return 0;
00616	}
.Op 5 src/lib/ansi/atof.c

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			src/lib/ansi/atof.c	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

00700	/*
00701	 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
00702	 * See the copyright notice in the ACK home directory, in the file "Copyright".
00703	 */
00704	/* $Header: atof.c,v 1.2 89/12/18 15:11:50 eck Exp $ */
00705	
00706	#include        <stdlib.h>
00707	#include        <errno.h>
00708	
00709	double
00710	atof(const char *nptr)
00711	{
00712	        double d;
00713	        int e = errno;
00714	
00715	        d = strtod(nptr, (char **) NULL);
00716	        errno = e;
00717	        return d;
00718	}


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			src/lib/ansi/atoi.c	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

00800	/*
00801	 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
00802	 * See the copyright notice in the ACK home directory, in the file "Copyright".
00803	 */
00804	/* $Header: atoi.c,v 1.4 90/05/22 12:22:25 ceriel Exp $ */
00805	
00806	#include        <ctype.h>
00807	#include        <stdlib.h>
00808	
00809	/* We do not use strtol here for backwards compatibility in behaviour on
00810	   overflow.
00811	*/
00812	int
00813	atoi(register const char *nptr)
00814	{
00815	        int total = 0;
00816	        int minus = 0;
00817	
00818	        while (isspace(*nptr)) nptr++;
00819	        if (*nptr == '+') nptr++;
00820	        else if (*nptr == '-') {
00821	                minus = 1;
00822	                nptr++;
00823	        }
00824	        while (isdigit(*nptr)) {
00825	                total *= 10;
00826	                total += (*nptr++ - '0');
00827	        }
00828	        return minus ? -total : total;
00829	}
.Ep 6 src/lib/ansi/atol.c

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			src/lib/ansi/atol.c	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

00900	/*
00901	 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
00902	 * See the copyright notice in the ACK home directory, in the file "Copyright".
00903	 */
00904	/* $Header: atol.c,v 1.3 90/05/22 10:48:12 ceriel Exp $ */
00905	
00906	#include        <ctype.h>
00907	#include        <stdlib.h>
00908	
00909	/* We do not use strtol here for backwards compatibility in behaviour on
00910	   overflow.
00911	*/
00912	long
00913	atol(register const char *nptr)
00914	{
00915	        long total = 0;
00916	        int minus = 0;
00917	
00918	        while (isspace(*nptr)) nptr++;
00919	        if (*nptr == '+') nptr++;
00920	        else if (*nptr == '-') {
00921	                minus = 1;
00922	                nptr++;
00923	        }
00924	        while (isdigit(*nptr)) {
00925	                total *= 10;
00926	                total += (*nptr++ - '0');
00927	        }
00928	        return minus ? -total : total;
00929	}






++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
			src/lib/ansi/bsearch.c	 	 
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01000	/*
01001	 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
01002	 * See the copyright notice in the ACK home directory, in the file "Copyright".
01003	 */
01004	/* $Header: bsearch.c,v 1.2 89/12/18 15:12:21 eck Exp $ */
01005	
01006	#include        <stdlib.h>
01007	
01008	void *
01009	bsearch(register const void *key, register const void *base,
01010	        register size_t nmemb, register size_t size,
01011	        int (*compar)(const void *, const void *))
01012	{
01013	        register const void *mid_point;
01014	        register int  cmp;
.Op 7 src/lib/ansi/bsearch.c
01015	
01016	        while (nmemb > 0) {
01017	                mid_point = (char *)base + size * (nmemb >> 1);
01018	                if ((cmp = (*compar)(key, mid_point)) == 0)
01019	                        return (void *)mid_point;
01020	                if (cmp >= 0) {
01021	                        base  = (char *)mid_point + size;
01022	                        nmemb = (nmemb - 1) >> 1;
01023	                } else
01024	                        nmemb >>= 1;
01025	        }
01026	        return (void *)NULL;
01027	}



++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
			src/lib/ansi/calloc.c	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

01100	/* $Header$ */
01101	#include        <stdlib.h>
01102	
01103	#define ALIGN(x)        (((x) + (sizeof(size_t) - 1)) & ~(sizeof(size_t) - 1))
01104	
01105	void *
01106	calloc(size_t nelem, size_t elsize)
01107	{
01108	        register char *p;
01109	        register size_t *q;
01110	        size_t size = ALIGN(nelem * elsize);
01111	
01112	        p = malloc(size);
01113	        if (p == NULL) return NULL;
01114	        q = (size_t *) (p + size);
01115	        while ((char *) q > p) *--q = 0;
01116	        return p;
01117	}
	


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
			src/lib/ansi/chartab.c	 	 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

01200	#include        <ctype.h>
01201	
01202	char __ctype[] = {
01203	0,
01204	_C,
01205	_C,
01206	_C,
01207	_C,
01208	_C,
01209	_C,
01210	_C,