hphp/neo/neo_rand.c

   1 /*
   2  * Copyright 2001-2004 Brandon Long
   3  * All Rights Reserved.
   4  *
   5  * ClearSilver Templating System
   6  *
   7  * This code is made available under the terms of the ClearSilver License.
   8  * http://www.clearsilver.net/license.hdf
   9  *
  10  */
  11
  12 #include "cs_config.h"
  13
  14 #include <stdlib.h>
  15 #include <stdio.h>
  16 #include <time.h>
  17 #include "neo_misc.h"
  18 #include "neo_rand.h"
  19
  20 static int RandomInit = 0;
  21
  22 void neo_seed_rand (long int seed)
  23 {
  24 #ifdef HAVE_DRAND48
  25   srand48(seed);
  26 #elif HAVE_RANDOM
  27   srandom(seed);
  28 #else
  29   srand(seed);
  30 #endif
  31   RandomInit = 1;
  32 }
  33
  34 int neo_rand (int max)
  35 {
  36   int r;
  37
  38   if (RandomInit == 0)
  39   {
  40     neo_seed_rand (time(NULL));
  41   }
  42 #ifdef HAVE_DRAND48
  43   r = drand48() * max;
  44 #elif HAVE_RANDOM
  45   r = random() * max;
  46 #else
  47   r = rand() * max;
  48 #endif
  49   return r;
  50 }