mirror of
https://github.com/zeldaret/oot.git
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7e195a3562
* osPfsIsPlug.c and osContSetCh.c OK * update * __osPfsGetStatus.c OK * removed unused asm * Updated all libultra controller files to use new structs instead of the temporary structs. Added os_pfs.h * controller updates * fixed header guard * Made suggested changes * guLookAt.c OK * commit * __osPfsSelectBank.c OK * osPfsDeleteFile.c OK * pfsreadwritefile.c OK * osPfsFreeBlocks.c OK * cleaned up ospfsfreeblocks * started pfsinitpak.c * pfsallocatefile.c OK * contpfs.c decompiled with 1 non matching * osPfsFindFile.c OK * pfsinitpak.c decompiled. one non-matching * Actually fixed merge conflict * sins.c OK * cosf.c sinf.c and sins.c OK * moved osAfterPreNMI to its own file. Renamed code_801031F0 to contquery.c * pfschecker.c OK * final update and rename * Removed makefile testing thing that i accidentally added * Made suggested changes
66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
#include <ultra64.h>
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#include <global.h>
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static const du P[] = {
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{ 0x3FF00000, 0x00000000 }, { 0xBFC55554, 0xBC83656D }, { 0x3F8110ED, 0x3804C2A0 },
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{ 0xBF29F6FF, 0xEEA56814 }, { 0x3EC5DBDF, 0x0E314BFE },
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};
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static const du rpi = { 0x3FD45F30, 0x6DC9C883 };
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static const du pihi = { 0x400921FB, 0x50000000 };
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static const du pilo = { 0x3E6110B4, 0x611A6263 };
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static const fu zero = { 0x00000000 };
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f32 sinf(f32 x) {
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f64 dx;
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f64 xSq;
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f64 polyApprox;
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f64 dn;
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s32 n;
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f64 result;
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s32 ix, xpt;
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ix = *(s32*)&x;
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xpt = (ix >> 22);
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xpt &= 0x1FF;
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if (xpt < 0xFF) {
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dx = x;
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if (xpt >= 0xE6) {
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xSq = SQ(dx);
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polyApprox = ((P[4].d * xSq + P[3].d) * xSq + P[2].d) * xSq + P[1].d;
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result = dx + (dx * xSq) * polyApprox;
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return (f32)result;
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}
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return x;
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}
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if (xpt < 0x136) {
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dx = x;
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dn = dx * rpi.d;
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n = ROUND(dn);
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dn = n;
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dx -= dn * pihi.d;
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dx -= dn * pilo.d;
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xSq = SQ(dx);
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polyApprox = ((P[4].d * xSq + P[3].d) * xSq + P[2].d) * xSq + P[1].d;
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result = dx + (dx * xSq) * polyApprox;
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if (!(n & 1)) {
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return (f32)result;
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}
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return -(f32)result;
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}
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if (x != x) {
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return __libm_qnan_f;
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}
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return zero.f;
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}
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