reactos/lib/string/rand.c

   1 #include <stdlib.h>
   2
   3 #if defined(__GNUC__)
   4 static unsigned long long next = 0;
   5 #else
   6 static unsigned __int64 next = 0;
   7 #endif
   8
   9 /*
  10  * @implemented
  11  */
  12 int rand(void)
  13 {
  14 #if defined(__GNUC__)
  15         next = next * 0x5deece66dLL + 11;
  16 #else
  17         next = next * 0x5deece66di64 + 11;
  18 #endif
  19         return (int)((next >> 16) & RAND_MAX);
  20 }
  21
  22
  23 /*
  24  * @implemented
  25  */
  26 void srand(unsigned seed)
  27 {
  28         next = seed;
  29 }