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Aetias
2025-02-16 16:07:22 +01:00
parent d057996378
commit 83bdfdb892
11 changed files with 449 additions and 37 deletions
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libs/nds/include/nds/math.h
+3
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@@ -8,6 +8,8 @@
extern "C" {
#endif
#define ABS(x) ((x) < 0 ? -(x) : (x))
// Q20.12 fixed point number
typedef s32 q20;
// Q4.12 fixed point number
@@ -19,6 +21,7 @@ typedef s16 q4;
#define FLOAT_TO_Q19(n) ((s32) (((n) * 8192 + 1)))
#define ROUND_Q20(n) (((s32) (n) + 0x800) >> 12)
#define MUL_Q20(a, b) (q20)((((s64) (a)) * ((s64) (b)) + 0x800) >> 12)
#define DIV_Q20(a, b) (((a) << 12) / (b))
#define DEG_TO_ANG(n) ((n) * 0x10000 / 360)
#define SIN(n) (gSinCosTable[2 * ((n) >> 4)])