diff --git a/sqrt_laurent.m b/sqrt_laurent.m
new file mode 100644
index 0000000000000000000000000000000000000000..2b53e89a2504872ba55c3cc8c1c012c321a8c1fd
--- /dev/null
+++ b/sqrt_laurent.m
@@ -0,0 +1,4 @@
+function s = sqrt_laurent(a)
+    s = sqrt(a);
+% my comment
+end