libs/basekit/source/RandomGen.h

   1
   2
   3 #ifndef RANDOMGEN_DEFINED
   4 #define RANDOMGEN_DEFINED 1
   5
   6 #ifdef __cplusplus
   7 extern "C" {
   8 #endif
   9
  10 #include "Common.h"
  11
  12 #define RANDOMGEN_N 624
  13
  14 typedef struct
  15 {
  16         unsigned long mt[RANDOMGEN_N]; // the array for the state vector
  17         int mti; // mti==N+1 means mt[N] is not initialized
  18         double y2; // guassian
  19         int use_last; // guassian
  20 } RandomGen;
  21
  22 BASEKIT_API RandomGen *RandomGen_new(void);
  23 BASEKIT_API void RandomGen_free(RandomGen *self);
  24
  25 BASEKIT_API void RandomGen_setSeed(RandomGen *self, unsigned long seed);
  26 BASEKIT_API void RandomGen_chooseRandomSeed(RandomGen *self);
  27
  28 // generates a random number on between 0.0 and 1.0
  29 BASEKIT_API double RandomGen_randomDouble(RandomGen *self);
  30
  31 BASEKIT_API int RandomGen_randomInt(RandomGen *self);
  32
  33 BASEKIT_API double RandomGen_gaussian(RandomGen *self, double mean, double standardDeviation);
  34
  35 #ifdef __cplusplus
  36 }
  37 #endif
  38 #endif