ShuriZma
/
mgba
mirror of https://github.com/mgba-emu/mgba.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

GBA BIOS: Fix ArcTan2 accuracy and boundary conditions

This commit is contained in:
Jeffrey Pfau 2016-06-16 00:19:20 -07:00
parent f17d434769
commit a5132a7b8f
2 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
CHANGES
View File

@ -22,6 +22,7 @@ Bugfixes:
- ARM7: Fix flags on SBC/RSC - ARM7: Fix flags on SBC/RSC
- Util: Fix realloc semantics in utf16to8 - Util: Fix realloc semantics in utf16to8
- ARM7: Fix setting spsr privilege bits when spsr is empty - ARM7: Fix setting spsr privilege bits when spsr is empty
- GBA BIOS: Fix ArcTan2 accuracy and boundary conditions
Misc: Misc:
- GBA: Slightly optimize GBAProcessEvents - GBA: Slightly optimize GBAProcessEvents
- Qt: Add preset for DualShock 4 - Qt: Add preset for DualShock 4

2
src/gba/bios.c
View File

@ -301,7 +301,7 @@ void GBASwi16(struct ARMCore* cpu, int immediate) {
cpu->gprs[0] = sqrt((uint32_t) cpu->gprs[0]); cpu->gprs[0] = sqrt((uint32_t) cpu->gprs[0]);
break; break;
case 0xA: case 0xA:
cpu->gprs[0] = atan2f(cpu->gprs[1] / 16384.f, cpu->gprs[0] / 16384.f) / (2 * M_PI) * 0x10000; cpu->gprs[0] = (uint16_t) (atan2f(cpu->gprs[1] / 16384.f, cpu->gprs[0] / 16384.f) / (2 * M_PI) * 0x10001);
break; break;
case 0xB: case 0xB:
case 0xC: case 0xC: