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#ifndef __M_FIXED_H__
#define __M_FIXED_H__
typedef int t_sample;
#define t_fixed int
#define fix1 18 /* (18) number of bits after comma */
#define fixfac ((float)(1<<fix1)) /* float factor (for scaling ftofix ..) */
/* fixed point multiplication and division */
#define mult(a,b) (long long)(((long long) (a) * (long long) (b))>>fix1)
#define idiv(a,b) ((((long long) (a) )<<fix1)/(long long) (b) )
/* conversion macros */
#define itofix(a) ((a) << fix1)
#define ftofix(a) ((t_fixed)( (a) *(double)fixfac + 0.5))
#define fixtof(a) ((double) (a) * 1./(fixfac-0.5))
#define fixtoi(a) ((a) >>fix1)
/* Not working !! */
#define fnum(a) ( (a) >>(fix1-16))
#define ffrac(a) (0)
/* mapping of fft functions */
#ifdef FIXEDPOINT
#define mayer_realifft imayer_realifft
#define mayer_realfft imayer_realfft
#define mayer_fft imayer_fft
#define mayer_ifft imayer_ifft
#endif
#ifdef FIXEDPOINT
#define SCALE16(x) (x>>(fix1-15))
#define SCALE32(x) (x<<(32-fix1))
#define INVSCALE16(x) (x<<8)
#else
#define SCALE16(x) (32767.*x)
#define SCALE32(x) (2147483648.*x)
#define INVSCALE16(x) ((float)3.051850e-05*x)
#endif
#endif
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