M CHANGES → CHANGES

@@ -38,6 +38,7 @@ - SDL: Fix race condition with audio thread when starting
  - GB: Fix flickering when screen is strobed quickly
  - FFmpeg: Fix overflow and general issues with audio encoding
  - Qt: Fix crash when changing audio settings after a game is closed
+ - GBA BIOS: Fix ArcTan sign in HLE BIOS
 Misc:
  - SDL: Remove scancode key input
  - GBA Video: Clean up unused timers

M src/gba/bios.c → src/gba/bios.c

@@ -271,7 +271,7 @@ cpu->gprs[3] = 1;
 	}
 }
 
-static int16_t _ArcTan(int16_t i) {
+static int16_t _ArcTan(int32_t i) {
 	int32_t a = -((i * i) >> 14);
 	int32_t b = ((0xA9 * a) >> 14) + 0x390;
 	b = ((b * a) >> 14) + 0x91C;
@@ -356,7 +356,7 @@ case 0x8:
 		cpu->gprs[0] = sqrt((uint32_t) cpu->gprs[0]);
 		break;
 	case 0x9:
-		cpu->gprs[0] = (uint16_t) _ArcTan(cpu->gprs[0]);
+		cpu->gprs[0] = _ArcTan(cpu->gprs[0]);
 		break;
 	case 0xA:
 		cpu->gprs[0] = (uint16_t) _ArcTan2(cpu->gprs[0], cpu->gprs[1]);