1 files changed, 18 insertions, 0 deletions
diff --git a/include/xorshift64.h b/include/xorshift64.h
new file mode 100644
index 0000000..a12a38d
--- /dev/null
+++ b/include/xorshift64.h
@@ -0,0 +1,18 @@
+#include <stdint.h>
+
+#ifndef XORSHIFT_H
+#define XORSHIFT_H
+
+extern uint64_t xors;
+
+#define XORSHIFT { \
+		xors ^= xors >> 12; \
+		xors ^= xors << 25; \
+		xors ^= xors >> 27; \
+		xors *= 0x2545F4914F6CDD1D; \
+	}
+
+#define RANDOM64 (xors)
+#define RANDOM32 ((uint32_t)xors)
+
+#endif