From 2ec63777fd4b80f4db87dc351a4a7332dc697aea Mon Sep 17 00:00:00 2001
From: Junyi Xu <junyixu0@gmail.com>
Date: Sat, 24 Aug 2024 20:28:08 +0800
Subject: [PATCH] add docs

---
 src/rhs.jl | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/rhs.jl b/src/rhs.jl
index 078a73b..26feb6c 100644
--- a/src/rhs.jl
+++ b/src/rhs.jl
@@ -1,3 +1,8 @@
+"""
+    upwind!(du, u, cache)
+
+vanilla upwind scheme
+"""
 function upwind!(du::Vector, u::Vector, cache)
     C = 0.2
     cache.numerical_flux .= u .* cache.v