From 082560fd5b48ff4b8c0f6c9b093c86ddf75052f6 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Sun, 6 Dec 2020 13:20:29 +0100
Subject: [PATCH] rio: rewrite better portion() function

---
 sys/src/cmd/rio/rio.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/sys/src/cmd/rio/rio.c b/sys/src/cmd/rio/rio.c
index 458d26d34..13c9e29eb 100644
--- a/sys/src/cmd/rio/rio.c
+++ b/sys/src/cmd/rio/rio.c
@@ -392,16 +392,15 @@ whichrect(Rectangle r, Point p, int which)
 int
 portion(int x, int lo, int hi)
 {
-	int t;
 	x -= lo;
 	hi -= lo;
-	t = min(20, max(1, hi/2));
-	if(hi < t)
-		return x > 0 ? 2 : 0;
-	if(x < t)
-		return 0;
-	if(x > hi-t)
-		return 2;
+	if(x < hi/2){
+		if(x < 20)
+			return 0;
+	} else {
+		if(x > hi-20)
+			return 2;
+	}
 	return 1;
 }