1 #ifndef FIXED_H_

2 #define FIXED_H_

3

4 #include <stdint.h>

5

6 #define ftox16(x) (int32_t)((x) * 65536.0f)

7 #define itox16(x) (int32_t)((x) << 16)

8

9 #define x16tof(x) (float)((x) / 65536.0f)

10 #define x16toi(x) ((x) >> 16)

11

12 #define x16mul(a, b) (int32_t)(((int32_t)(a) >> 8) * ((int32_t)(b) >> 8))

13 /*int32_t x16div(register int32_t num, register int32_t denom);*/

14 #define x16div(a, b) (int32_t)(((int64_t)(a) << 16) / (b))

15

16 #define x16sq(x) x16mul(x, x)

17

18 #endif /* FIXED_H_ */