driver/random: linear congruential

driver/random/random.c

@@ -0,0 +1,15 @@
+
+#include "random.h"
+
+// glibc defaults
+static const uint32_t a = 1103515245, c = 12345, m = 2147483648;
+static uint32_t       v = 1;
+
+
+void random_Seed(uint32_t seed) {
+	v = seed;
+}
+
+uint32_t random_Rand() {
+	return v = (uint32_t)(((uint64_t)v * a + c) % m);
+}

driver/random/random.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+void random_Seed(uint32_t seed);
+
+uint32_t random_Rand();
+
+
+#ifdef __cplusplus
+}
+#endif