1 files changed, 6 insertions, 0 deletions
diff --git a/Tests/Tutorial/Step9/MathFunctions/mysqrt.h b/Tests/Tutorial/Step9/MathFunctions/mysqrt.h
new file mode 100644
index 0000000..e1c42ef
--- /dev/null
+++ b/Tests/Tutorial/Step9/MathFunctions/mysqrt.h
@@ -0,0 +1,6 @@
+
+namespace mathfunctions {
+namespace detail {
+double mysqrt(double x);
+}
+}