xref: /src/games/warp/util.h

/* Header: util.h,v 7.0 86/10/08 15:14:37 lwall Exp */

/* Log:	util.h,v
 * Revision 7.0  86/10/08  15:14:37  lwall
 * Split into separate files.  Added amoebas and pirates.
 *
 */

#if RANDBITS < 15 || defined(lint)
#define rand_mod(m) getpid()
#define RANDRAND 0.0
#define HALFRAND 0
#define myrand() getpid()
#else
#if RANDBITS == 15	/* 15 bits of rand()? */
#define RANDRAND 268435456.0 /* that's 2**28 */
#define HALFRAND 0x4000 /* that's 2**14 */
int rand(void);
#define myrand() (rand()&32767)
#define rand_mod(m) ((int)((double)myrand() / 32768.0 * ((double)(m))))
/* pick number in 0..m-1 */

#else

#if RANDBITS < 31	/* 16 bits of rand()? */
#define RANDRAND 1073741824.0 /* that's 2**30 */
#define HALFRAND 0x8000 /* that's 2**15 */
unsigned rand();
#define myrand() (rand()&65535)
#define rand_mod(m) ((int)((double)myrand() / 65536.0 * ((double)(m))))
/* pick number in 0..m-1 */

#else		/* assume 31 bits */
#define RANDRAND 1152921504606846976.0 /* that's 2**60 */
#define HALFRAND 0x40000000 /* that's 2**30 */
long rand();
#define myrand() rand()
#define rand_mod(m) ((myrand() / 37) % (m)) /* pick number in 0..m-1 */
/*
 * The reason for the /37 above is that our random number generator yields
 * successive evens and odds, for some reason.  This makes strange star maps.
 */
#endif
#endif
#endif


    /* we get fractions of seconds from calling ftime on timebuf */

EXT struct timeb timebuf;
#define roundsleep(x) (ftime(&timebuf),sleep(timebuf.millitm > 500?x+1:x))

#define waiting 0

#ifdef NOTDEF
EXT int len_last_line_got INIT(0);
			/* strlen of some_buf after */
			/*  some_buf = get_a_line(bufptr,buffersize,fp) */
#endif

#ifdef NOTDEF
/* is the string for makedir a directory name or a filename? */

#define MD_DIR 0
#define MD_FILE 1
#endif

void util_init(void);
void movc3(int, char *, char *);
void no_can_do(const char *);
int exdis(int);
void *safemalloc(size_t size);
char *safecpy(char *, const char *, size_t);
char *cpytill(char *, const char *, int);
char *instr(const char *, const char *);
#ifdef SETUIDGID
int eaccess(const char *, mode_t);
#endif
void prexit(const char *);
char *savestr(const char *);
char *getval(const char *, const char *);