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n64
2019-11-03 14:36:27 -05:00
parent 6b8bc9b9ec
commit a7c423cb43
4603 changed files with 475500 additions and 437701 deletions
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18
src/engine/math_util.h
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@@ -1,8 +1,24 @@
#ifndef _MATH_UTIL_H_
#define _MATH_UTIL_H_
/*
* The sine and cosine tables overlap, but "#define gCosineTable (gSineTable +
* 0x400)" doesn't give expected codegen; gSineTable and gCosineTable need to
* be different symbols for code to match. Most likely the tables were placed
* adjacent to each other, and gSineTable cut short, such that reads overflow
* into gCosineTable.
*
* These kinds of out of bounds reads are undefined behavior, and break on
* e.g. GCC (which doesn't place the tables next to each other, and probably
* exploits array sizes for range analysis-based optimizations as well).
* Thus, for non-IDO compilers we use the standard-compliant version.
*/
extern f32 gSineTable[];
#if BUGFIXES_CRITICAL
#define gCosineTable (gSineTable + 0x400)
#else
extern f32 gCosineTable[];
#endif
#define sins(x) gSineTable[(u16) (x) >> 4]
#define coss(x) gCosineTable[(u16) (x) >> 4]
@@ -41,7 +57,7 @@ void mtxf_mul_vec3s(f32 a[4][4], Vec3s b);
void mtxf_to_mtx(Mtx *a, f32 b[4][4]);
void mtxf_rotate_xy(Mtx *a, s16 b);
void get_pos_from_transform_mtx(Vec3f a, f32 b[4][4], f32 c[4][4]);
void vec3f_get_dist_and_angle(Vec3f a, Vec3f b, f32 *c, s16 *d, s16 *e);
void vec3f_get_dist_and_angle(Vec3f from, Vec3f to, f32 *dist, s16 *pitch, s16 *yaw);
void vec3f_set_dist_and_angle(Vec3f a, Vec3f b, f32 c, s16 d, s16 e);
s32 approach_s32(s32 a, s32 b, s32 c, s32 d);
f32 approach_f32(f32 a, f32 b, f32 c, f32 d);