-static int surewarehk_rand_bytes(unsigned char *buf, size_t num);
-static void surewarehk_rand_seed(const void *buf, size_t num);
-static void surewarehk_rand_add(const void *buf, size_t num, double entropy);
+static int surewarehk_rand_bytes(unsigned char *buf, int num);
+static void surewarehk_rand_seed(const void *buf, int num);
+static void surewarehk_rand_add(const void *buf, int num, double entropy);