Add a script to generate an arctangent regression test
diff --git a/tests/scripts/arctangent.bc b/tests/scripts/arctangent.bc
new file mode 100644
index 0000000..f4532ee
--- /dev/null
+++ b/tests/scripts/arctangent.bc
@@ -0,0 +1,8 @@
+for (i = 1; i <= 100; ++i) {
+	print "scale = ", i, "\n"
+	"a(1)"
+}
+
+"halt"
+
+halt