From 3ea4939a388d7d57b7f1bf647286087c07bbd3d0 Mon Sep 17 00:00:00 2001
From: MathisGD <mathis@morpho.xyz>
Date: Wed, 15 Nov 2023 17:22:20 +0100
Subject: [PATCH] docs: document riemann avg

---
 src/SpeedJumpIrm.sol | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/SpeedJumpIrm.sol b/src/SpeedJumpIrm.sol
index b3a1c326..19a24d2c 100644
--- a/src/SpeedJumpIrm.sol
+++ b/src/SpeedJumpIrm.sol
@@ -139,6 +139,8 @@ contract AdaptativeCurveIrm is IIrm {
                 startRateAtTarget.wMulDown(MathLib.wExp(linearAdaptation)).bound(MIN_RATE_AT_TARGET, MAX_RATE_AT_TARGET);
 
             // Then we compute the average rate over the period, with a Riemann sum.
+            // We omit the multiplication by the rectangle length because we would divide everything by the total length
+            // at the end, because we want to compute the average and not the integral.
             int256 averageRateAtTarget;
             int256 step = linearAdaptation / N_STEPS;
             for (int256 k = 1; k <= N_STEPS; k++) {