gba-x3dtest
annotate src/fixed.h @ 8:fb0a0d6a8b52
sortof works
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Thu, 19 Jun 2014 05:53:46 +0300 |
| parents | 158d23956801 |
| children |
| rev | line source |
|---|---|
| nuclear@4 | 1 #ifndef FIXED_H_ |
| nuclear@4 | 2 #define FIXED_H_ |
| nuclear@4 | 3 |
| nuclear@4 | 4 #include <stdint.h> |
| nuclear@4 | 5 |
| nuclear@7 | 6 #define ftox16(x) (int32_t)((x) * 65536.0f) |
| nuclear@7 | 7 #define itox16(x) (int32_t)((x) << 16) |
| nuclear@7 | 8 |
| nuclear@7 | 9 #define x16tof(x) (float)((x) / 65536.0f) |
| nuclear@7 | 10 #define x16toi(x) ((x) >> 16) |
| nuclear@7 | 11 |
| nuclear@4 | 12 #define x16mul(a, b) (int32_t)(((int32_t)(a) >> 8) * ((int32_t)(b) >> 8)) |
| nuclear@4 | 13 /*int32_t x16div(register int32_t num, register int32_t denom);*/ |
| nuclear@4 | 14 #define x16div(a, b) (int32_t)(((int64_t)(a) << 16) / (b)) |
| nuclear@4 | 15 |
| nuclear@8 | 16 #define x16sq(x) x16mul(x, x) |
| nuclear@8 | 17 |
| nuclear@4 | 18 #endif /* FIXED_H_ */ |