git.zerfleddert.de Git - proxmark3-svn/blob - common/prng.h

   1 //-----------------------------------------------------------------------------
   2 //-----------------------------------------------------------------------------
   3 // Burtle Prng - Modified.   42iterations instead of 20.
   4 // ref: http://burtleburtle.net/bob/rand/smallprng.html
   5 //-----------------------------------------------------------------------------
   6
   7 #ifndef __PRNG_H
   8 #define __PRNG_H
   9 #include <stdint.h>
  10 #include <stddef.h>
  11 typedef struct prng_ctx {
  12         uint32_t a;
  13         uint32_t b;
  14         uint32_t c;
  15         uint32_t d;
  16 } prng_ctx;
  17
  18 //uint32_t burtle_get( prng_ctx *x );
  19 uint32_t burtle_get_mod( prng_ctx *x );
  20 void burtle_init_mod(prng_ctx *x, uint32_t seed );
  21 void burtle_init(prng_ctx *x, uint32_t seed );
  22
  23 uint32_t GetSimplePrng( uint32_t seed );
  24 #endif /* __PRNG_H */