From 4ce6abe1e82035a4bb9de8d13fb693ad9137a583 Mon Sep 17 00:00:00 2001
From: vsariola <5684185+vsariola@users.noreply.github.com>
Date: Sat, 10 Apr 2021 19:17:38 +0300
Subject: [PATCH] fix(tracker): the mod function could return negative values
 with mod(-1,1)

Never copy-paste code from the internets
---
 tracker/songpoint.go | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/tracker/songpoint.go b/tracker/songpoint.go
index d0e3232..9bfaaa7 100644
--- a/tracker/songpoint.go
+++ b/tracker/songpoint.go
@@ -94,12 +94,8 @@ func (r *SongRect) Contains(p SongPoint) bool {
 }
 
 func mod(a, b int) int {
-	m := a % b
-	if a < 0 && b < 0 {
-		m -= b
+	if a < 0 {
+		return b - 1 - mod(-a-1, b)
 	}
-	if a < 0 && b > 0 {
-		m += b
-	}
-	return m
+	return a % b
 }