Add random number generator and related functions

2025-11-28 13:09:11 -05:00 · 2010-05-02 10:58:25 +02:00
parent 47589ff34a
commit 5e9c245e39
2 changed files with 153 additions and 0 deletions
--- a/src/rng.h
+++ b/src/rng.h
@@ -0,0 +1,25 @@
+
+#ifndef __RNG_H__
+#define __RNG_H__
+
+struct rng_ctx {
+  int32_t iy;
+  int32_t iv[32]; /* shuffle array */
+  int32_t seed;
+};
+
+
+void
+rng_init(struct rng_ctx *ctx);
+
+int32_t
+rng_rand(struct rng_ctx *ctx);
+
+int32_t
+rng_rand_range(struct rng_ctx *ctx, int32_t min, int32_t max);
+
+void
+shuffle_ptr(struct rng_ctx *ctx, void **values, int len);
+
+#endif /* !__RNG_H__ */
+