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) {