path: root/arm9/asm/math_util.s

	.include "asm/macros.inc"
    .include "global.inc"

	.extern UNK_020FFA38

	.section .rodata

	.global UNK_020EDB80
UNK_020EDB80: ; 0x020EDB80
	.short 0x169F, 0x0F14, 0x0B4F, 0x090C, 0x078A, 0x0676, 0x05A7, 0x0506
	.short 0x0486, 0x041C, 0x03C5, 0x037A, 0x033B, 0x0304, 0x02D3, 0x02A9
	.short 0x0283, 0x0261, 0x0243, 0x0227, 0x020E, 0x01F7, 0x01E2, 0x01CF
	.short 0x01BD, 0x01AC, 0x019D, 0x018F, 0x0182, 0x0175, 0x0169, 0x015E
	.short 0x0154, 0x014A, 0x0141, 0x0139, 0x0130, 0x0128, 0x0121, 0x011A
	.short 0x0113, 0x010D, 0x0107, 0x0101, 0x00FB, 0x00F6, 0x00F1, 0x00EC
	.short 0x00E7, 0x00E3, 0x00DE, 0x00DA, 0x00D6, 0x00D2, 0x00CE, 0x00CB
	.short 0x00C7, 0x00C4, 0x00C1, 0x00BD, 0x00BA, 0x00B7, 0x00B4, 0x00B2
	.short 0x00AF, 0x00AC, 0x00AA, 0x00A7, 0x00A5, 0x00A3, 0x00A0, 0x009E
	.short 0x009C, 0x009A, 0x0098, 0x0096, 0x0094, 0x0092, 0x0090, 0x008E
	.short 0x008D, 0x008B, 0x0089, 0x0088, 0x0086, 0x0085, 0x0083, 0x0082
	.short 0x0080, 0x007F, 0x007D, 0x007C, 0x007B, 0x0079, 0x0078, 0x0077
	.short 0x0076, 0x0074, 0x0073, 0x0072, 0x0071, 0x0070, 0x006F, 0x006E
	.short 0x006D, 0x006C, 0x006B, 0x006A, 0x0069, 0x0068, 0x0067, 0x0066
	.short 0x0065, 0x0064, 0x0063, 0x0062, 0x0062, 0x0061, 0x0060, 0x005F
	.short 0x005E, 0x005E, 0x005D, 0x005C, 0x005B, 0x005B, 0x005A

	.global UNK_020EDC7E
UNK_020EDC7E: ; 0x020EDC7E
	.short 0x0000, 0x00B7, 0x016D, 0x0223, 0x02D9, 0x038F, 0x0445, 0x04FB
	.short 0x05B1, 0x0667, 0x071D, 0x07D3, 0x0889, 0x093F, 0x09F5, 0x0AAB
	.short 0x0B61, 0x0C17, 0x0CCD, 0x0D83, 0x0E39, 0x0EEF, 0x0FA5, 0x105C
	.short 0x1112, 0x11C8, 0x127E, 0x1334, 0x13EA, 0x14A0, 0x1556, 0x160C
	.short 0x16C2, 0x1778, 0x182E, 0x18E4, 0x199A, 0x1A50, 0x1B06, 0x1BBC
	.short 0x1C72, 0x1D28, 0x1DDE, 0x1E94, 0x1F4A, 0x2000, 0x20B7, 0x216D
	.short 0x2223, 0x22D9, 0x238F, 0x2445, 0x24FB, 0x25B1, 0x2667, 0x271D
	.short 0x27D3, 0x2889, 0x293F, 0x29F5, 0x2AAB, 0x2B61, 0x2C17, 0x2CCD
	.short 0x2D83, 0x2E39, 0x2EEF, 0x2FA5, 0x305C, 0x3112, 0x31C8, 0x327E
	.short 0x3334, 0x33EA, 0x34A0, 0x3556, 0x360C, 0x36C2, 0x3778, 0x382E
	.short 0x38E4, 0x399A, 0x3A50, 0x3B06, 0x3BBC, 0x3C72, 0x3D28, 0x3DDE
	.short 0x3E94, 0x3F4A, 0x4000, 0x40B7, 0x416D, 0x4223, 0x42D9, 0x438F
	.short 0x4445, 0x44FB, 0x45B1, 0x4667, 0x471D, 0x47D3, 0x4889, 0x493F
	.short 0x49F5, 0x4AAB, 0x4B61, 0x4C17, 0x4CCD, 0x4D83, 0x4E39, 0x4EEF
	.short 0x4FA5, 0x505C, 0x5112, 0x51C8, 0x527E, 0x5334, 0x53EA, 0x54A0
	.short 0x5556, 0x560C, 0x56C2, 0x5778, 0x582E, 0x58E4, 0x599A, 0x5A50
	.short 0x5B06, 0x5BBC, 0x5C72, 0x5D28, 0x5DDE, 0x5E94, 0x5F4A, 0x6000
	.short 0x60B7, 0x616D, 0x6223, 0x62D9, 0x638F, 0x6445, 0x64FB, 0x65B1
	.short 0x6667, 0x671D, 0x67D3, 0x6889, 0x693F, 0x69F5, 0x6AAB, 0x6B61
	.short 0x6C17, 0x6CCD, 0x6D83, 0x6E39, 0x6EEF, 0x6FA5, 0x705C, 0x7112
	.short 0x71C8, 0x727E, 0x7334, 0x73EA, 0x74A0, 0x7556, 0x760C, 0x76C2
	.short 0x7778, 0x782E, 0x78E4, 0x799A, 0x7A50, 0x7B06, 0x7BBC, 0x7C72
	.short 0x7D28, 0x7DDE, 0x7E94, 0x7F4A, 0x8000, 0x80B7, 0x816D, 0x8223
	.short 0x82D9, 0x838F, 0x8445, 0x84FB, 0x85B1, 0x8667, 0x871D, 0x87D3
	.short 0x8889, 0x893F, 0x89F5, 0x8AAB, 0x8B61, 0x8C17, 0x8CCD, 0x8D83
	.short 0x8E39, 0x8EEF, 0x8FA5, 0x905C, 0x9112, 0x91C8, 0x927E, 0x9334
	.short 0x93EA, 0x94A0, 0x9556, 0x960C, 0x96C2, 0x9778, 0x982E, 0x98E4
	.short 0x999A, 0x9A50, 0x9B06, 0x9BBC, 0x9C72, 0x9D28, 0x9DDE, 0x9E94
	.short 0x9F4A, 0xA000, 0xA0B7, 0xA16D, 0xA223, 0xA2D9, 0xA38F, 0xA445
	.short 0xA4FB, 0xA5B1, 0xA667, 0xA71D, 0xA7D3, 0xA889, 0xA93F, 0xA9F5
	.short 0xAAAB, 0xAB61, 0xAC17, 0xACCD, 0xAD83, 0xAE39, 0xAEEF, 0xAFA5
	.short 0xB05C, 0xB112, 0xB1C8, 0xB27E, 0xB334, 0xB3EA, 0xB4A0, 0xB556
	.short 0xB60C, 0xB6C2, 0xB778, 0xB82E, 0xB8E4, 0xB99A, 0xBA50, 0xBB06
	.short 0xBBBC, 0xBC72, 0xBD28, 0xBDDE, 0xBE94, 0xBF4A, 0xC000, 0xC0B7
	.short 0xC16D, 0xC223, 0xC2D9, 0xC38F, 0xC445, 0xC4FB, 0xC5B1, 0xC667
	.short 0xC71D, 0xC7D3, 0xC889, 0xC93F, 0xC9F5, 0xCAAB, 0xCB61, 0xCC17
	.short 0xCCCD, 0xCD83, 0xCE39, 0xCEEF, 0xCFA5, 0xD05C, 0xD112, 0xD1C8
	.short 0xD27E, 0xD334, 0xD3EA, 0xD4A0, 0xD556, 0xD60C, 0xD6C2, 0xD778
	.short 0xD82E, 0xD8E4, 0xD99A, 0xDA50, 0xDB06, 0xDBBC, 0xDC72, 0xDD28
	.short 0xDDDE, 0xDE94, 0xDF4A, 0xE000, 0xE0B7, 0xE16D, 0xE223, 0xE2D9
	.short 0xE38F, 0xE445, 0xE4FB, 0xE5B1, 0xE667, 0xE71D, 0xE7D3, 0xE889
	.short 0xE93F, 0xE9F5, 0xEAAB, 0xEB61, 0xEC17, 0xECCD, 0xED83, 0xEE39
	.short 0xEEEF, 0xEFA5, 0xF05C, 0xF112, 0xF1C8, 0xF27E, 0xF334, 0xF3EA
	.short 0xF4A0, 0xF556, 0xF60C, 0xF6C2, 0xF778, 0xF82E, 0xF8E4, 0xF99A
	.short 0xFA50, 0xFB06, 0xFBBC, 0xFC72, 0xFD28, 0xFDDE, 0xFE94, 0xFF4A

	.balign 4, 0
	.global UNK_020EDF50
UNK_020EDF50: ; 0x020EDF50
	.word 0x00000000, 0x00000047, 0x0000008F, 0x000000D6
	.word 0x0000011E, 0x00000165, 0x000001AC, 0x000001F3
	.word 0x0000023A, 0x00000281, 0x000002C7, 0x0000030E
	.word 0x00000354, 0x00000399, 0x000003DF, 0x00000424
	.word 0x00000469, 0x000004AE, 0x000004F2, 0x00000536
	.word 0x00000579, 0x000005BC, 0x000005FE, 0x00000640
	.word 0x00000682, 0x000006C3, 0x00000704, 0x00000744
	.word 0x00000783, 0x000007C2, 0x00000800, 0x0000083E
	.word 0x0000087B, 0x000008B7, 0x000008F2, 0x0000092D
	.word 0x00000968, 0x000009A1, 0x000009DA, 0x00000A12
	.word 0x00000A49, 0x00000A7F, 0x00000AB5, 0x00000AE9
	.word 0x00000B1D, 0x00000B50, 0x00000B82, 0x00000BB4
	.word 0x00000BE4, 0x00000C13, 0x00000C42, 0x00000C6F
	.word 0x00000C9C, 0x00000CC7, 0x00000CF2, 0x00000D1B
	.word 0x00000D44, 0x00000D6B, 0x00000D92, 0x00000DB7
	.word 0x00000DDB, 0x00000DFE, 0x00000E21, 0x00000E42
	.word 0x00000E61, 0x00000E80, 0x00000E9E, 0x00000EBA
	.word 0x00000ED6, 0x00000EF0, 0x00000F09, 0x00000F21
	.word 0x00000F38, 0x00000F4D, 0x00000F61, 0x00000F74
	.word 0x00000F86, 0x00000F97, 0x00000FA6, 0x00000FB5
	.word 0x00000FC2, 0x00000FCE, 0x00000FD8, 0x00000FE1
	.word 0x00000FEA, 0x00000FF0, 0x00000FF6, 0x00000FFA
	.word 0x00000FFE, 0x00000FFF, 0x00001000, 0x00000FFF
	.word 0x00000FFE, 0x00000FFA, 0x00000FF6, 0x00000FF0
	.word 0x00000FEA, 0x00000FE1, 0x00000FD8, 0x00000FCE
	.word 0x00000FC2, 0x00000FB5, 0x00000FA6, 0x00000F97
	.word 0x00000F86, 0x00000F74, 0x00000F61, 0x00000F4D
	.word 0x00000F38, 0x00000F21, 0x00000F09, 0x00000EF0
	.word 0x00000ED6, 0x00000EBA, 0x00000E9E, 0x00000E80
	.word 0x00000E61, 0x00000E42, 0x00000E21, 0x00000DFE
	.word 0x00000DDB, 0x00000DB7, 0x00000D92, 0x00000D6B
	.word 0x00000D44, 0x00000D1B, 0x00000CF2, 0x00000CC7
	.word 0x00000C9C, 0x00000C6F, 0x00000C42, 0x00000C13
	.word 0x00000BE4, 0x00000BB4, 0x00000B82, 0x00000B50
	.word 0x00000B1D, 0x00000AE9, 0x00000AB5, 0x00000A7F
	.word 0x00000A49, 0x00000A12, 0x000009DA, 0x000009A1
	.word 0x00000968, 0x0000092D, 0x000008F2, 0x000008B7
	.word 0x0000087B, 0x0000083E, 0x00000800, 0x000007C2
	.word 0x00000783, 0x00000744, 0x00000704, 0x000006C3
	.word 0x00000682, 0x00000640, 0x000005FE, 0x000005BC
	.word 0x00000579, 0x00000536, 0x000004F2, 0x000004AE
	.word 0x00000469, 0x00000424, 0x000003DF, 0x00000399
	.word 0x00000354, 0x0000030E, 0x000002C7, 0x00000281
	.word 0x0000023A, 0x000001F3, 0x000001AC, 0x00000165
	.word 0x0000011E, 0x000000D6, 0x0000008F, 0x00000047
	.word 0x00000000, 0xFFFFFFB9, 0xFFFFFF71, 0xFFFFFF2A
	.word 0xFFFFFEE2, 0xFFFFFE9B, 0xFFFFFE54, 0xFFFFFE0D
	.word 0xFFFFFDC6, 0xFFFFFD7F, 0xFFFFFD39, 0xFFFFFCF2
	.word 0xFFFFFCAC, 0xFFFFFC67, 0xFFFFFC21, 0xFFFFFBDC
	.word 0xFFFFFB97, 0xFFFFFB52, 0xFFFFFB0E, 0xFFFFFACA
	.word 0xFFFFFA87, 0xFFFFFA44, 0xFFFFFA02, 0xFFFFF9C0
	.word 0xFFFFF97E, 0xFFFFF93D, 0xFFFFF8FC, 0xFFFFF8BC
	.word 0xFFFFF87D, 0xFFFFF83E, 0xFFFFF800, 0xFFFFF7C2
	.word 0xFFFFF785, 0xFFFFF749, 0xFFFFF70E, 0xFFFFF6D3
	.word 0xFFFFF698, 0xFFFFF65F, 0xFFFFF626, 0xFFFFF5EE
	.word 0xFFFFF5B7, 0xFFFFF581, 0xFFFFF54B, 0xFFFFF517
	.word 0xFFFFF4E3, 0xFFFFF4B0, 0xFFFFF47E, 0xFFFFF44C
	.word 0xFFFFF41C, 0xFFFFF3ED, 0xFFFFF3BE, 0xFFFFF391
	.word 0xFFFFF364, 0xFFFFF339, 0xFFFFF30E, 0xFFFFF2E5
	.word 0xFFFFF2BC, 0xFFFFF295, 0xFFFFF26E, 0xFFFFF249
	.word 0xFFFFF225, 0xFFFFF202, 0xFFFFF1DF, 0xFFFFF1BE
	.word 0xFFFFF19F, 0xFFFFF180, 0xFFFFF162, 0xFFFFF146
	.word 0xFFFFF12A, 0xFFFFF110, 0xFFFFF0F7, 0xFFFFF0DF
	.word 0xFFFFF0C8, 0xFFFFF0B3, 0xFFFFF09F, 0xFFFFF08C
	.word 0xFFFFF07A, 0xFFFFF069, 0xFFFFF05A, 0xFFFFF04B
	.word 0xFFFFF03E, 0xFFFFF032, 0xFFFFF028, 0xFFFFF01F
	.word 0xFFFFF016, 0xFFFFF010, 0xFFFFF00A, 0xFFFFF006
	.word 0xFFFFF002, 0xFFFFF001, 0xFFFFF000, 0xFFFFF001
	.word 0xFFFFF002, 0xFFFFF006, 0xFFFFF00A, 0xFFFFF010
	.word 0xFFFFF016, 0xFFFFF01F, 0xFFFFF028, 0xFFFFF032
	.word 0xFFFFF03E, 0xFFFFF04B, 0xFFFFF05A, 0xFFFFF069
	.word 0xFFFFF07A, 0xFFFFF08C, 0xFFFFF09F, 0xFFFFF0B3
	.word 0xFFFFF0C8, 0xFFFFF0DF, 0xFFFFF0F7, 0xFFFFF110
	.word 0xFFFFF12A, 0xFFFFF146, 0xFFFFF162, 0xFFFFF180
	.word 0xFFFFF19F, 0xFFFFF1BE, 0xFFFFF1DF, 0xFFFFF202
	.word 0xFFFFF225, 0xFFFFF249, 0xFFFFF26E, 0xFFFFF295
	.word 0xFFFFF2BC, 0xFFFFF2E5, 0xFFFFF30E, 0xFFFFF339
	.word 0xFFFFF364, 0xFFFFF391, 0xFFFFF3BE, 0xFFFFF3ED
	.word 0xFFFFF41C, 0xFFFFF44C, 0xFFFFF47E, 0xFFFFF4B0
	.word 0xFFFFF4E3, 0xFFFFF517, 0xFFFFF54B, 0xFFFFF581
	.word 0xFFFFF5B7, 0xFFFFF5EE, 0xFFFFF626, 0xFFFFF65F
	.word 0xFFFFF698, 0xFFFFF6D3, 0xFFFFF70E, 0xFFFFF749
	.word 0xFFFFF785, 0xFFFFF7C2, 0xFFFFF800, 0xFFFFF83E
	.word 0xFFFFF87D, 0xFFFFF8BC, 0xFFFFF8FC, 0xFFFFF93D
	.word 0xFFFFF97E, 0xFFFFF9C0, 0xFFFFFA02, 0xFFFFFA44
	.word 0xFFFFFA87, 0xFFFFFACA, 0xFFFFFB0E, 0xFFFFFB52
	.word 0xFFFFFB97, 0xFFFFFBDC, 0xFFFFFC21, 0xFFFFFC67
	.word 0xFFFFFCAC, 0xFFFFFCF2, 0xFFFFFD39, 0xFFFFFD7F
	.word 0xFFFFFDC6, 0xFFFFFE0D, 0xFFFFFE54, 0xFFFFFE9B
	.word 0xFFFFFEE2, 0xFFFFFF2A, 0xFFFFFF71, 0xFFFFFFB9
	.word 0x00000000, 0x00000047, 0x0000008F, 0x000000D6
	.word 0x0000011E, 0x00000165, 0x000001AC, 0x000001F3
	.word 0x0000023A, 0x00000281, 0x000002C7, 0x0000030E
	.word 0x00000354, 0x00000399, 0x000003DF, 0x00000424
	.word 0x00000469, 0x000004AE, 0x000004F2, 0x00000536
	.word 0x00000579, 0x000005BC, 0x000005FE, 0x00000640
	.word 0x00000682, 0x000006C3, 0x00000704, 0x00000744
	.word 0x00000783, 0x000007C2, 0x00000800, 0x0000083E
	.word 0x0000087B, 0x000008B7, 0x000008F2, 0x0000092D
	.word 0x00000968, 0x000009A1, 0x000009DA, 0x00000A12
	.word 0x00000A49, 0x00000A7F, 0x00000AB5, 0x00000AE9
	.word 0x00000B1D, 0x00000B50, 0x00000B82, 0x00000BB4
	.word 0x00000BE4, 0x00000C13, 0x00000C42, 0x00000C6F
	.word 0x00000C9C, 0x00000CC7, 0x00000CF2, 0x00000D1B
	.word 0x00000D44, 0x00000D6B, 0x00000D92, 0x00000DB7
	.word 0x00000DDB, 0x00000DFE, 0x00000E21, 0x00000E42
	.word 0x00000E61, 0x00000E80, 0x00000E9E, 0x00000EBA
	.word 0x00000ED6, 0x00000EF0, 0x00000F09, 0x00000F21
	.word 0x00000F38, 0x00000F4D, 0x00000F61, 0x00000F74
	.word 0x00000F86, 0x00000F97, 0x00000FA6, 0x00000FB5
	.word 0x00000FC2, 0x00000FCE, 0x00000FD8, 0x00000FE1
	.word 0x00000FEA, 0x00000FF0, 0x00000FF6, 0x00000FFA
	.word 0x00000FFE, 0x00000FFF

	.section .data

	.global UNK_02105BA8
UNK_02105BA8: ; 0x02105BA8
	.byte 0x71, 0x02, 0x00, 0x00

	.global UNK_02105BAC
UNK_02105BAC: ; 0x02105BAC
	.byte 0x00, 0x00, 0x00, 0x00, 0xDF, 0xB0, 0x08, 0x99

	.section .bss

	.global gLCRNG_State
gLCRNG_State: ; 0x021C4D48
	.space 4

	.global gMTRNG_State
gMTRNG_State: ; 0x021C4D4C
	.space 624 * 4

	.text

	thumb_func_start FUN_0201B93C
FUN_0201B93C: ; 0x0201B93C
	mov r1, #0x5a
	lsl r1, r1, #0x2
	cmp r0, r1
	blo _0201B948
	mov r0, #0x0
	bx lr
_0201B948:
	lsl r1, r0, #0x2
	ldr r0, _0201B950 ; =UNK_020EDF50
	ldr r0, [r0, r1]
	bx lr
	.balign 4
_0201B950: .word UNK_020EDF50

	thumb_func_start FUN_0201B954
FUN_0201B954: ; 0x0201B954
	mov r1, #0x5a
	lsl r1, r1, #0x2
	cmp r0, r1
	blo _0201B960
	mov r0, #0x0
	bx lr
_0201B960:
	add r0, #0x5a
	lsl r1, r0, #0x2
	ldr r0, _0201B96C ; =UNK_020EDF50
	ldr r0, [r0, r1]
	bx lr
	nop
_0201B96C: .word UNK_020EDF50

	thumb_func_start FUN_0201B970
FUN_0201B970: ; 0x0201B970
	; gSineTable[x % 360]
	push {r3, lr}
	mov r1, #0x5a
	lsl r1, r1, #0x2
	bl _s32_div_f
	ldr r0, _0201B984 ; =UNK_020EDF50
	lsl r1, r1, #0x2
	ldr r0, [r0, r1]
	pop {r3, pc}
	nop
_0201B984: .word UNK_020EDF50

	thumb_func_start FUN_0201B988
FUN_0201B988: ; 0x0201B988
	; gSineTable[(x % 360) + 90]
	push {r3, lr}
	mov r1, #0x5a
	lsl r1, r1, #0x2
	bl _s32_div_f
	add r1, #0x5a
	ldr r0, _0201B99C ; =UNK_020EDF50
	lsl r1, r1, #0x2
	ldr r0, [r0, r1]
	pop {r3, pc}
	.balign 4
_0201B99C: .word UNK_020EDF50

	thumb_func_start FUN_0201B9A0
FUN_0201B9A0: ; 0x0201B9A0
	; UNK_020EDC7E[x % 360]
	push {r3, lr}
	mov r1, #0x5a
	lsl r1, r1, #0x2
	bl _s32_div_f
	ldr r0, _0201B9B4 ; =UNK_020EDC7E
	lsl r1, r1, #0x1
	ldrh r0, [r0, r1]
	pop {r3, pc}
	nop
_0201B9B4: .word UNK_020EDC7E

	thumb_func_start FUN_0201B9B8
FUN_0201B9B8: ; 0x0201B9B8
	; gSineTable[((x << 4) >> 16) % 360]
	push {r3, lr}
	lsl r0, r0, #0x4
	mov r1, #0x5a
	lsr r0, r0, #0x10
	lsl r1, r1, #0x2
	bl _s32_div_f
	ldr r0, _0201B9D0 ; =UNK_020EDF50
	lsl r1, r1, #0x2
	ldr r0, [r0, r1]
	pop {r3, pc}
	nop
_0201B9D0: .word UNK_020EDF50

	thumb_func_start getseed_LC
getseed_LC: ; 0x0201B9D4
	ldr r0, _0201B9DC ; =gLCRNG_State
	ldr r0, [r0, #0x0]
	bx lr
	nop
_0201B9DC: .word gLCRNG_State

	thumb_func_start seedr_LC
seedr_LC: ; 0x0201B9E0
	ldr r1, _0201B9E8 ; =gLCRNG_State
	str r0, [r1, #0x0]
	bx lr
	nop
_0201B9E8: .word gLCRNG_State

	thumb_func_start rand_LC
rand_LC: ; 0x0201B9EC
	ldr r1, _0201BA04 ; =gLCRNG_State
	ldr r0, _0201BA08 ; =0x41C64E6D
	ldr r2, [r1, #0x0]
	add r3, r2, #0x0
	mul r3, r0
	ldr r0, _0201BA0C ; =0x00006073
	add r0, r3, r0
	str r0, [r1, #0x0]
	lsr r0, r0, #0x10
	lsl r0, r0, #0x10
	lsr r0, r0, #0x10
	bx lr
	.balign 4
_0201BA04: .word gLCRNG_State
_0201BA08: .word 0x41C64E6D
_0201BA0C: .word 0x00006073

	thumb_func_start rand_ALT
rand_ALT: ; 0x0201BA10
	ldr r1, _0201BA18 ; =0x6C078965
	mul r1, r0
	add r0, r1, #0x1
	bx lr
	.balign 4
_0201BA18: .word 0x6C078965

	thumb_func_start seedr_MT
seedr_MT: ; 0x0201BA1C
	push {r4-r5}
	ldr r1, _0201BA50 ; =gLCRNG_State
	mov r4, #0x27
	str r0, [r1, #0x4]
	ldr r1, _0201BA54 ; =UNK_02105BA8
	mov r0, #0x1
	str r0, [r1, #0x0]
	ldr r1, _0201BA58 ; =gMTRNG_State + 4
	ldr r3, _0201BA5C ; =0x6C078965
	lsl r4, r4, #0x4
_0201BA30:
	sub r2, r1, #0x4
	ldr r5, [r2, #0x0]
	lsr r2, r5, #0x1e
	eor r2, r5
	add r5, r2, #0x0
	mul r5, r3
	add r2, r0, r5
	add r0, r0, #0x1
	stmia r1!, {r2}
	cmp r0, r4
	blt _0201BA30
	ldr r1, _0201BA54 ; =UNK_02105BA8
	str r0, [r1, #0x0]
	pop {r4-r5}
	bx lr
	nop
_0201BA50: .word gLCRNG_State
_0201BA54: .word UNK_02105BA8
_0201BA58: .word gMTRNG_State + 4
_0201BA5C: .word 0x6C078965

	thumb_func_start rand_MT
rand_MT: ; 0x0201BA60
	push {r3-r7, lr}
	ldr r0, _0201BB44 ; =UNK_02105BA8
	ldr r1, [r0, #0x0]
	mov r0, #0x27
	lsl r0, r0, #0x4
	cmp r1, r0
	blt _0201BB18
	add r0, r0, #0x1
	cmp r1, r0
	bne _0201BA7A
	ldr r0, _0201BB48 ; =0x00001571
	bl seedr_MT
_0201BA7A:
	ldr r4, _0201BB4C ; =gMTRNG_State
	ldr r1, _0201BB50 ; =UNK_02105BAC
	ldr r5, _0201BB54 ; =0x7FFFFFFF
	ldr r6, _0201BB58 ; =0x00000634
	mov r0, #0x0
_0201BA84:
	mov r2, #0x2
	ldr r3, [r4, #0x0]
	lsl r2, r2, #0x1e
	and r3, r2
	ldr r2, [r4, #0x4]
	add r0, r0, #0x1
	and r2, r5
	orr r3, r2
	lsr r7, r3, #0x1
	lsl r3, r3, #0x1f
	ldr r2, [r4, r6]
	lsr r3, r3, #0x1d
	ldr r3, [r1, r3]
	eor r2, r7
	eor r2, r3
	stmia r4!, {r2}
	cmp r0, #0xe3
	blt _0201BA84
	ldr r1, _0201BB5C ; =0x0000026F
	cmp r0, r1
	bge _0201BAE4
	ldr r2, _0201BB4C ; =gMTRNG_State
	lsl r1, r0, #0x2
	add r1, r2, r1
	mov r2, #0xe3
	ldr r4, _0201BB50 ; =UNK_02105BAC
	ldr r3, _0201BB5C ; =0x0000026F
	lsl r2, r2, #0x2
_0201BABC:
	mov r5, #0x2
	ldr r6, [r1, #0x0]
	lsl r5, r5, #0x1e
	and r5, r6
	ldr r7, [r1, #0x4]
	ldr r6, _0201BB54 ; =0x7FFFFFFF
	add r0, r0, #0x1
	and r6, r7
	orr r6, r5
	lsr r5, r6, #0x1
	sub r7, r1, r2
	lsl r6, r6, #0x1f
	ldr r7, [r7, #0x0]
	lsr r6, r6, #0x1d
	ldr r6, [r4, r6]
	eor r5, r7
	eor r5, r6
	stmia r1!, {r5}
	cmp r0, r3
	blt _0201BABC
_0201BAE4:
	ldr r2, _0201BB60 ; =gMTRNG_State + 607 * 4
	mov r0, #0x2
	ldr r1, [r2, #0x40]
	lsl r0, r0, #0x1e
	add r3, r1, #0x0
	ldr r1, _0201BB64 ; =gLCRNG_State
	and r3, r0
	ldr r1, [r1, #0x4]
	sub r0, r0, #0x1
	and r0, r1
	add r4, r3, #0x0
	orr r4, r0
	ldr r0, _0201BB68 ; =gMTRNG_State + 383 * 4
	ldr r1, [r0, #0x34]
	lsr r0, r4, #0x1
	add r3, r1, #0x0
	eor r3, r0
	lsl r0, r4, #0x1f
	lsr r1, r0, #0x1d
	ldr r0, _0201BB50 ; =UNK_02105BAC
	ldr r0, [r0, r1]
	mov r1, #0x0
	eor r0, r3
	str r0, [r2, #0x40]
	ldr r0, _0201BB44 ; =UNK_02105BA8
	str r1, [r0, #0x0]
_0201BB18:
	ldr r0, _0201BB44 ; =UNK_02105BA8
	ldr r2, [r0, #0x0]
	add r1, r2, #0x1
	str r1, [r0, #0x0]
	ldr r0, _0201BB4C ; =gMTRNG_State
	lsl r1, r2, #0x2
	ldr r1, [r0, r1]
	lsr r0, r1, #0xb
	add r2, r1, #0x0
	eor r2, r0
	ldr r0, _0201BB6C ; =0x9D2C5680
	lsl r1, r2, #0x7
	and r0, r1
	eor r2, r0
	ldr r0, _0201BB70 ; =0xEFC60000
	lsl r1, r2, #0xf
	and r0, r1
	add r1, r2, #0x0
	eor r1, r0
	lsr r0, r1, #0x12
	eor r0, r1
	pop {r3-r7, pc}
	.balign 4
_0201BB44: .word UNK_02105BA8
_0201BB48: .word 0x00001571
_0201BB4C: .word gMTRNG_State
_0201BB50: .word UNK_02105BAC
_0201BB54: .word 0x7FFFFFFF
_0201BB58: .word 0x00000634
_0201BB5C: .word 0x0000026F
_0201BB60: .word gMTRNG_State + 607 * 4
_0201BB64: .word gLCRNG_State
_0201BB68: .word gMTRNG_State + 383 * 4
_0201BB6C: .word 0x9D2C5680
_0201BB70: .word 0xEFC60000

	thumb_func_start FUN_0201BB74
FUN_0201BB74: ; 0x0201BB74
	push {r4-r6, lr}
	add r5, r0, #0x0
	add r0, sp, #0x0
	ldrb r0, [r0, #0x10]
	add r4, r2, #0x0
	add r6, r3, #0x0
	cmp r0, #0x1
	bne _0201BB8E
	ldr r0, _0201BBC8 ; =0x0000FFFF
	mul r0, r1
	lsl r0, r0, #0x8
	lsr r1, r0, #0x10
	b _0201BBA2
_0201BB8E:
	cmp r0, #0x2
	bne _0201BBA2
	ldr r0, _0201BBC8 ; =0x0000FFFF
	mul r0, r1
	mov r1, #0x5a
	lsl r1, r1, #0x2
	bl _u32_div_f
	lsl r0, r0, #0x10
	lsr r1, r0, #0x10
_0201BBA2:
	asr r0, r1, #0x4
	lsl r3, r0, #0x1
	lsl r1, r3, #0x1
	ldr r2, _0201BBCC ; =UNK_020FFA38
	add r3, r3, #0x1
	lsl r3, r3, #0x1
	ldrsh r1, [r2, r1]
	ldrsh r2, [r2, r3]
	add r0, r5, #0x0
	bl MTX_Rot22_
	add r0, r5, #0x0
	add r1, r5, #0x0
	add r2, r4, #0x0
	add r3, r6, #0x0
	bl MTX_ScaleApply22
	pop {r4-r6, pc}
	nop
_0201BBC8: .word 0x0000FFFF
_0201BBCC: .word UNK_020FFA38

	thumb_func_start FUN_0201BBD0
FUN_0201BBD0: ; 0x0201BBD0
	push {r3-r7, lr}
	sub sp, #0x38
	lsl r5, r0, #0xc
	lsl r4, r1, #0xc
	mov r1, #0x0
	lsl r0, r2, #0xc
	lsl r6, r3, #0xc
	str r1, [sp, #0x34]
	str r0, [sp, #0x0]
	str r0, [sp, #0x20]
	str r1, [sp, #0x28]
	str r1, [sp, #0x8]
	str r1, [sp, #0xc]
	asr r1, r5, #0x1f
	add r0, r5, #0x0
	asr r3, r6, #0x1f
	add r2, r6, #0x0
	str r5, [sp, #0x2c]
	str r4, [sp, #0x30]
	str r6, [sp, #0x24]
	bl _ll_mul
	str r0, [sp, #0x4]
	add r2, r4, #0x0
	ldr r0, [sp, #0x20]
	add r7, r1, #0x0
	asr r1, r0, #0x1f
	asr r3, r2, #0x1f
	bl _ll_mul
	mov r2, #0x2
	ldr r3, [sp, #0x4]
	lsl r2, r2, #0xa
	add r3, r3, r2
	ldr r2, _0201BC80 ; =0x00000000
	str r4, [sp, #0x2c]
	adc r7, r2
	lsl r2, r7, #0x14
	lsr r3, r3, #0xc
	orr r3, r2
	mov r2, #0x2
	lsl r2, r2, #0xa
	add r0, r0, r2
	ldr r2, _0201BC80 ; =0x00000000
	str r5, [sp, #0x30]
	adc r1, r2
	lsl r1, r1, #0x14
	lsr r0, r0, #0xc
	orr r0, r1
	sub r2, r3, r0
	ldr r1, [sp, #0x8]
	ldr r0, [sp, #0xc]
	str r2, [sp, #0x10]
	add r0, r1, r0
	add r7, r2, r0
	mov r0, #0x0
	str r0, [sp, #0x34]
	add r0, sp, #0x2c
	add r1, sp, #0x14
	bl VEC_Normalize
	mov r1, #0x0
	ldr r0, [sp, #0x0]
	str r1, [sp, #0x34]
	str r0, [sp, #0x20]
	str r1, [sp, #0x28]
	add r0, sp, #0x20
	add r1, sp, #0x2c
	add r2, sp, #0x8
	str r5, [sp, #0x2c]
	str r4, [sp, #0x30]
	str r6, [sp, #0x24]
	bl VEC_Subtract
	add r0, sp, #0x14
	add r1, sp, #0x8
	bl VEC_DotProduct
	asr r0, r0, #0xc
	bpl _0201BC72
	neg r0, r0
_0201BC72:
	cmp r7, #0x0
	bgt _0201BC7C
	mov r1, #0x0
	mvn r1, r1
	mul r0, r1
_0201BC7C:
	add sp, #0x38
	pop {r3-r7, pc}
	.balign 4
_0201BC80: .word 0x00000000

	thumb_func_start FUN_0201BC84
FUN_0201BC84: ; 0x0201BC84
	push {r3-r5, lr}
	lsl r0, r0, #0xd
	add r4, r1, #0x0
	ldr r2, _0201BCB4 ; =0x0000323D
	asr r1, r0, #0x1f
	mov r3, #0x0
	bl _ll_mul
	add r5, r0, #0x0
	ldr r0, _0201BCB8 ; =0x0000FFFF
	mov r2, #0x2
	mov r3, #0x0
	lsl r2, r2, #0xa
	mul r0, r4
	add r2, r5, r2
	adc r1, r3
	lsl r1, r1, #0x14
	lsr r2, r2, #0xc
	orr r2, r1
	asr r1, r2, #0xc
	bl _s32_div_f
	pop {r3-r5, pc}
	nop
_0201BCB4: .word 0x0000323D
_0201BCB8: .word 0x0000FFFF