include: Document mock().
diff --git a/include/cmocka.h b/include/cmocka.h
index 5542696..969bb12 100755
--- a/include/cmocka.h
+++ b/include/cmocka.h
@@ -123,8 +123,18 @@
#define cast_ptr_to_largest_integral_type(value) \
cast_to_largest_integral_type(cast_to_pointer_integral_type(value))
-/* Retrieves a return value for the current function. */
+#ifdef DOXYGEN
+/**
+ * @brief Retrieve a return value of the current function.
+ *
+ * @return The value which was stored to return by this function.
+ *
+ * @see will_return()
+ */
+void *mock(void);
+#else
#define mock() _mock(__func__, __FILE__, __LINE__)
+#endif
/*
* Stores a value to be returned by the specified function later.
