DEG180 122 sound/usb/caiaq/input.c #define DEG270 (DEG90 + DEG180) DEG180 123 sound/usb/caiaq/input.c #define DEG360 (DEG180 * 2) DEG180 164 sound/usb/caiaq/input.c pos_a = HIGH_PEAK - a + DEG180;