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Annotation of coherent/a/usr/src/misc/misc.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * misc.h
        !             3:  * Miscellaneous useful user functions.
        !             4:  * Sugggestions and additions are welcome.
        !             5:  */
        !             6: #include <stdio.h>
        !             7: extern fatal();                /* like fprintf(stderr, ...); exit(0); */
        !             8: extern usage();                /* like fatal but message starts usage: */
        !             9: extern FILE *xopen();  /* xopen(filename, access); fopen or die */
        !            10: extern char *pathn();  /* pathn("helpfile", "LIBPATH", ",,\lib", "r");
        !            11:                         * gets full pathname given an filename
        !            12:                         * env var with path, default path and access rights */
        !            13: extern xdump();                /* xdump(ptr, size) hex dumps an area */
        !            14: extern long randl();   /* IEEE random number (random bits) */
        !            15: extern srandl();       /* srandl(unsigned long s1, s2); */
        !            16: extern unsigned short crc16(); /* crc16(char *p) calculate 16 bit crc */
        !            17: extern char *ask();    /* ask(reply, msg);
        !            18:                         * like printf(msg, ...) returns a user reply */
        !            19: extern int yn();       /* like printf(msg, ...) returns yes=1 or no=0 reply */
        !            20: extern char *alloc();  /* get space or die */
        !            21: extern void banner();  /* banner("Done", 3) prints a banner saying
        !            22:                         * Done with 3 spaces infront. */
        !            23: extern strcmpl();      /* case insensative strcmp() */
        !            24: extern char *lcase();  /* convert string to lower case */
        !            25: extern char *ucase();  /* convert string to upper case */
        !            26: extern char *newcpy(); /* make a malloced copy of a string */
        !            27: extern char *match();  /* match(s1, pat, fin)
        !            28:                         * finds pat in s1 by pnmatch rules
        !            29:                         * returns start of pattern or NULL
        !            30:                         * places pointer to end in *fin
        !            31:                         */
        !            32: extern char *replace(); /* replace(s1, pat, s3, all, matcher)
        !            33:                         * search s1 for pat and replace by s3.
        !            34:                         * Using matcher which is a pointer to
        !            35:                         * a function that looks externally like match.
        !            36:                         * Returns a new malloced string or NULL
        !            37:                         * does all if all != 0 else first. */
        !            38: extern char * span();  /* span(s1, matcher, fin)
        !            39:                         * matches all chars passing function
        !            40:                         * matcher. Looks like match. */
        !            41: extern char * skip();  /* skip(s1, matcher, fin)
        !            42:                         * matches all chars not passing function
        !            43:                         * matcher. Looks like match. */
        !            44: extern approx();       /* approx(double a, double b) 1 if == within epsilon */
        !            45: extern double epsilon;
        !            46: extern int is_fs();    /* is_fs(char *special) test if special is filesystem */
        !            47: extern void vinit();   /* vinit(char * workFileName, unsigned storAmt);
        !            48:                         * Init the software virtual system telling it how much
        !            49:                         * storage it may use for buffers */
        !            50: extern void vshutdown(); /* Shut down the virtual system and free its storage */
        !            51: extern unsigned vopen(); /* vopen(long amt); Set up a virtual object amt
        !            52:                          * bytes long and return a vid number. */
        !            53: extern char *vfind();  /* vfind(int vid, long disp, int dirty);
        !            54:                         * Point to a byte disp bytes into vid, set the
        !            55:                         * dirty bit if dirty == 1 */
        !            56: extern strchrtr();
        !            57:                        /* strchrtr(char *from, char *to, int c, int d)
        !            58:                         * Find c in from and return the corresponding char
        !            59:                         * in to or def if there is none.
        !            60:                         */
        !            61: #define ENDOF(x) (((char *)(x))+sizeof(x)) /* end of some thing */
        !            62: #define SETIN(a, b) !((a) & ~(b))      /* a in b */
        !            63: #define SWAP(a, b) a ^= b ^= a ^= b;   /* be sure a isn't identical to b */
        !            64: #define strlcpy(to, from) memcpy(to, from, sizeof(to));
        !            65: 
        !            66: #ifdef M68000
        !            67: #define ptrdiff(a, b) ((long)a - (long)b)
        !            68: #else
        !            69: #ifdef LARGE
        !            70: #define ptrdiff(a, b) (((((long)a>>16)-((long)b>>16))<<4)+((int)a-(int)b))
        !            71: #else
        !            72: #define ptrdiff(a, b) ((int)a - (int)b)
        !            73: #endif
        !            74: #endif

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