mbed-mruby

Diff: mrbgems/mruby-random/mt19937ar.h

Revision:

0:158c61bb030f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mrbgems/mruby-random/mt19937ar.h	Wed Mar 25 17:36:16 2015 +0000
@@ -0,0 +1,52 @@
+/*
+** mt19937ar.h - MT Random functions
+**
+** See Copyright Notice in mruby.h
+*/
+
+#define N 624
+
+typedef struct {
+  unsigned long mt[N];
+  int mti;
+  union {
+    unsigned long int_;
+    double double_;
+  } gen;
+
+  mrb_int seed;
+  mrb_bool has_seed : 1;
+} mt_state;
+
+void mrb_random_init_genrand(mt_state *, unsigned long);
+unsigned long mrb_random_genrand_int32(mt_state *);
+double mrb_random_genrand_real1(mt_state *t);
+
+/* initializes mt[N] with a seed */
+void init_genrand(unsigned long s);
+
+/* initialize by an array with array-length */
+/* init_key is the array for initializing keys */
+/* key_length is its length */
+/* slight change for C++, 2004/2/26 */
+void init_by_array(unsigned long init_key[], int key_length);
+
+/* generates a random number on [0,0xffffffff]-interval */
+unsigned long genrand_int32(void);
+
+/* generates a random number on [0,0x7fffffff]-interval */
+long genrand_int31(void);
+
+/* These real versions are due to Isaku Wada, 2002/01/09 added */
+/* generates a random number on [0,1]-real-interval */
+double genrand_real1(void);
+
+/* generates a random number on [0,1)-real-interval */
+double genrand_real2(void);
+
+/* generates a random number on (0,1)-real-interval */
+double genrand_real3(void);
+
+/* generates a random number on [0,1) with 53-bit resolution*/
+double genrand_res53(void);
+