From 5a3986c1f77d6325b4b13b2cf3e035eff6b430ba Mon Sep 17 00:00:00 2001
From: Kristoffer Sahlin <krsahlin@gmail.com>
Date: Fri, 12 Jun 2026 12:07:46 +0200
Subject: [PATCH] Also adds the score dropoff to PE path

PR #601 fixed only for SE path plus for rescue in PE mode.
This PR completes the changes to also use score-based dropoff for the
pairing of NAMs(/chains).

Is-new-baseline: yes
---
 src/mapper.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/mapper.rs b/src/mapper.rs
index 82f9e099..40e2968f 100644
--- a/src/mapper.rs
+++ b/src/mapper.rs
@@ -1454,10 +1454,9 @@ where
 /// compute dropoff of the first (top) NAM
 fn top_dropoff(nams: &[Nam]) -> f32 {
     let n_max = &nams[0];
-    if n_max.anchors.len() <= 2 {
-        1.0
-    } else if nams.len() > 1 {
-        nams[1].anchors.len() as f32 / n_max.anchors.len() as f32
+    if nams.len() > 1 {
+        debug_assert!(n_max.score > 0.0);
+        nams[1].score / n_max.score
     } else {
         0.0
     }