mirror of https://github.com/mgba-emu/mgba.git
GBA BIOS: Fix ArcTan2 accuracy and boundary conditions
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@ -22,6 +22,7 @@ Bugfixes:
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- ARM7: Fix flags on SBC/RSC
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- Util: Fix realloc semantics in utf16to8
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- ARM7: Fix setting spsr privilege bits when spsr is empty
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- GBA BIOS: Fix ArcTan2 accuracy and boundary conditions
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Misc:
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- GBA: Slightly optimize GBAProcessEvents
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- Qt: Add preset for DualShock 4
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@ -301,7 +301,7 @@ void GBASwi16(struct ARMCore* cpu, int immediate) {
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cpu->gprs[0] = sqrt((uint32_t) cpu->gprs[0]);
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break;
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case 0xA:
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cpu->gprs[0] = atan2f(cpu->gprs[1] / 16384.f, cpu->gprs[0] / 16384.f) / (2 * M_PI) * 0x10000;
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cpu->gprs[0] = (uint16_t) (atan2f(cpu->gprs[1] / 16384.f, cpu->gprs[0] / 16384.f) / (2 * M_PI) * 0x10001);
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break;
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case 0xB:
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case 0xC:
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