From fd5d481b583373d0a2024d08059a6613b6bd8aad Mon Sep 17 00:00:00 2001
From: prayerie <moya@moya.cafe>
Date: Wed, 18 Feb 2026 09:25:38 +0000
Subject: [PATCH] digitbox: more concise wraparound using unsigned overflow

---
 tobkit/source/digitbox.cpp | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/tobkit/source/digitbox.cpp b/tobkit/source/digitbox.cpp
index db69f10..efaa45e 100644
--- a/tobkit/source/digitbox.cpp
+++ b/tobkit/source/digitbox.cpp
@@ -88,18 +88,16 @@ void DigitBox::penDown(u8 px, u8 py) {
 
 	if((px>x)&&(px<x+width/4)&&(py>y)&&(py<y+9)&&digits==2) { // top left arrow 
 		btnstate = 1;
-		if (value > max-0x10) value = value + 0x10 - max - 1; // wrap around if (value + 0x10) > 0xff. so 0xf0 wraps to 0x00
-		else value+=0x10;
+		value+=0x10;
 	} else if((px>x)&&(px<x+width/4)&&(py>y+9)&&(py<y+18)&&digits==2) { // bottom left arrow
 		btnstate = 2;
-		if (value < 0x10) value = max - 0x10 + value + 1; // likewise wrap around downwards
-		else value-=0x10;
+		value-=0x10;
 	} else if((px>x)&&(px>x+(width/4)*3)&&(py>y)&&(py<y+9)) { // top right arrow
 		btnstate = 3;
-		if(value<max) value++; else value = min;
+		value++;
 	} else if((px>x)&&(px>x+(width/4)*3)&&(py>y+9)&&(py<y+18)) { // bottom right arrow
 		btnstate = 4;
-		if(value>min) value--; else value = max;
+		value--;
 	}
 	
 	if(value!=oldvalue) {