Initial version

1 files changed, 15 insertions, 0 deletions

diff --git a/src/prng/rand.c b/src/prng/rand.c
new file mode 100644
index 0000000..c000cd2
--- /dev/null
+++ b/src/prng/rand.c
@@ -0,0 +1,15 @@
+#include <stdlib.h>
+#include <stdint.h>
+
+static uint64_t seed;
+
+void srand(unsigned s)
+{
+	seed = s-1;
+}
+
+int rand(void)
+{
+	seed = 6364136223846793005ULL*seed + 1;
+	return seed>>33;
+}