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CoderStig
632512ada9
* fixed float issue brought over from zeldaret * Import trig_tables.inc.c * Delete game_data_802BA370.s * Import two funcs from sm64 into code_80004740.c
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
#ifndef MATH_UTIL_H
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#define MATH_UTIL_H
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#include <PR/ultratypes.h>
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#include "types.h"
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/*
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* The sine and cosine tables overlap, but "#define gCosineTable (gSineTable +
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* 0x400)" doesn't give expected codegen; gSineTable and gCosineTable need to
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* be different symbols for code to match. Most likely the tables were placed
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* adjacent to each other, and gSineTable cut short, such that reads overflow
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* into gCosineTable.
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*
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* These kinds of out of bounds reads are undefined behavior, and break on
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* e.g. GCC (which doesn't place the tables next to each other, and probably
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* exploits array sizes for range analysis-based optimizations as well).
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* Thus, for non-IDO compilers we use the standard-compliant version.
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*/
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extern f32 gSineTable[];
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#ifdef AVOID_UB
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#define gCosineTable (gSineTable + 0x400)
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#else
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extern f32 gCosineTable[];
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#endif
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//#define sins(x) gSineTable[(u16) (x) >> 4]
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//#define coss(x) gCosineTable[(u16) (x) >> 4]
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//#define min(a, b) ((a) <= (b) ? (a) : (b))
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//#define max(a, b) ((a) > (b) ? (a) : (b))
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#define sqr(x) ((x) * (x))
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#endif // MATH_UTIL_H
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