diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..6a704b7
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,7 @@
+---
+# We'll use defaults from the LLVM style, but with 4 columns indentation.
+BasedOnStyle: LLVM
+---
+Language: Cpp
+Standard: Cpp03
+---