From f301296f1e1c9ba9ceeb49aead1f89fc3cd94ba6 Mon Sep 17 00:00:00 2001
From: Damian Schneider <daedae@gmx.ch>
Date: Sun, 6 Oct 2024 21:27:58 +0200
Subject: [PATCH] added rounding to sin8_t

thx to @softhack007
---
 wled00/wled_math.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/wled00/wled_math.cpp b/wled00/wled_math.cpp
index 401446a23..080cc9425 100644
--- a/wled00/wled_math.cpp
+++ b/wled00/wled_math.cpp
@@ -77,8 +77,8 @@ int16_t cos16_t(uint16_t theta) {
 
 uint8_t sin8_t(uint8_t theta) {
   int32_t sin16 = sin16_t((uint16_t)theta * 257); // 255 * 257 = 0xFFFF
-  sin16 += 0x7FFF; //shift result to range 0-0xFFFF
-  return sin16 >> 8;
+  sin16 += 0x7FFF + 128; //shift result to range 0-0xFFFF, +128 for rounding
+  return min(sin16, int32_t(0xFFFF)) >> 8; // min performs saturation, and prevents overflow
 }
 
 uint8_t cos8_t(uint8_t theta) {