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#ifndef __MATH_H_
#define __MATH_H_
#include <inttypes.h>
#include <math.h>
#include "lib/fixedpoint.h"
#define Q_MUL(a, b, bits) (( (int64_t) (a) * (int64_t) (b) ) >> (bits))
#define Q15_MUL(a, b) Q_MUL(a,b,15)
#define Q16_MUL(a, b) Q_MUL(a,b,16)
#define Q_DIV(a, b, bits) ( (((int64_t) (a)) << (bits)) / (b) )
#define Q15_DIV(a, b) Q_DIV(a,b,15)
#define Q16_DIV(a, b) Q_DIV(a,b,16)
#define float_q(a, bits) (int32_t)( ((float)(a)) *(1<<(bits)))
#define float_q15(a) float_q(a, 15)
#define float_q16(a) float_q(a, 16)
#endif
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