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Annotation of coherent/a/usr/src/misc/misc.h, revision 1.1.1.1

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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