1 files changed, 13 insertions, 0 deletions
diff --git a/src/pkg/runtime/runtime.c b/src/pkg/runtime/runtime.c
index 1a3653f108..83af8dc5e2 100644
--- a/src/pkg/runtime/runtime.c
+++ b/src/pkg/runtime/runtime.c
@@ -588,3 +588,16 @@ runtime·FuncForPC(uintptr pc, void *retf)
 	retf = runtime·findfunc(pc);
 	FLUSH(&retf);
 }
+
+uint32
+runtime·fastrand1(void)
+{
+	uint32 x;
+
+	x = m->fastrand;
+	x += x;
+	if(x & 0x80000000L)
+		x ^= 0x88888eefUL;
+	m->fastrand = x;
+	return x;
+}