warp/util.h

   1 /* Header: util.h,v 7.0 86/10/08 15:14:37 lwall Exp */
   2
   3 /* Log: util.h,v
   4  * Revision 7.0  86/10/08  15:14:37  lwall
   5  * Split into separate files.  Added amoebas and pirates.
   6  *
   7  */
   8
   9 #if RANDBITS < 15 || defined(lint)
  10 #define rand_mod(m) getpid()
  11 #define RANDRAND 0.0
  12 #define HALFRAND 0
  13 #define myrand() getpid()
  14 #else
  15 #if RANDBITS == 15      /* 15 bits of rand()? */
  16 #define RANDRAND 268435456.0 /* that's 2**28 */
  17 #define HALFRAND 0x4000 /* that's 2**14 */
  18 int rand();
  19 #define myrand() (rand()&32767)
  20 #define rand_mod(m) ((int)((double)myrand() / 32768.0 * ((double)(m))))
  21 /* pick number in 0..m-1 */
  22
  23 #else
  24
  25 #if RANDBITS < 31       /* 16 bits of rand()? */
  26 #define RANDRAND 1073741824.0 /* that's 2**30 */
  27 #define HALFRAND 0x8000 /* that's 2**15 */
  28 unsigned rand();
  29 #define myrand() (rand()&65535)
  30 #define rand_mod(m) ((int)((double)myrand() / 65536.0 * ((double)(m))))
  31 /* pick number in 0..m-1 */
  32
  33 #else           /* assume 31 bits */
  34 #define RANDRAND 1152921504606846976.0 /* that's 2**60 */
  35 #define HALFRAND 0x40000000 /* that's 2**30 */
  36 long rand();
  37 #define myrand() rand()
  38 #define rand_mod(m) ((myrand() / 37) % (m)) /* pick number in 0..m-1 */
  39 /*
  40  * The reason for the /37 above is that our random number generator yields
  41  * successive evens and odds, for some reason.  This makes strange star maps.
  42  */
  43 #endif
  44 #endif
  45 #endif
  46
  47
  48     /* we get fractions of seconds from calling ftime on timebuf */
  49
  50 EXT struct timeb timebuf;
  51 #define roundsleep(x) (ftime(&timebuf),sleep(timebuf.millitm > 500?x+1:x))
  52
  53 void movc3();
  54 void no_can_do();
  55 int exdis();
  56
  57 EXT bool waiting INIT(FALSE);           /* are we waiting for subprocess (in doshell)? */
  58
  59 #ifdef NOTDEF
  60 EXT int len_last_line_got INIT(0);
  61                         /* strlen of some_buf after */
  62                         /*  some_buf = get_a_line(bufptr,buffersize,fp) */
  63 #endif
  64
  65 #ifdef NOTDEF
  66 /* is the string for makedir a directory name or a filename? */
  67
  68 #define MD_DIR 0
  69 #define MD_FILE 1
  70 #endif
  71
  72 void util_init();
  73 char    *safemalloc();
  74 char    *safecpy();
  75 char    *cpytill();
  76 char    *instr();
  77 #ifdef SETUIDGID
  78     int         eaccess();
  79 #endif
  80 char    *getwd();
  81 void    cat();
  82 void    prexit();
  83 char    *savestr();
  84 char    *getval();