apps/plugins/pdbox/PDa/src/m_fixed.h

   1 #ifndef __M_FIXED_H__
   2 #define __M_FIXED_H__
   3
   4 typedef int t_sample;
   5
   6 #define t_fixed int
   7 #define fix1 18  /* (18) number of bits after comma */
   8
   9
  10 #define fixfac ((float)(1<<fix1))  /* float factor (for scaling ftofix ..) */
  11
  12
  13 /* fixed point multiplication and division */
  14
  15 #define mult(a,b) (long long)(((long long) (a) * (long long) (b))>>fix1)
  16 #define idiv(a,b) ((((long long) (a) )<<fix1)/(long long) (b) )
  17
  18 /* conversion macros */
  19
  20 #define itofix(a) ((a) << fix1)
  21 #define ftofix(a) ((t_fixed)( (a) *(double)fixfac + 0.5))
  22
  23 #define fixtof(a) ((double) (a) * 1./(fixfac-0.5))
  24 #define fixtoi(a) ((a) >>fix1)
  25
  26
  27 /* Not working !! */
  28
  29 #define fnum(a) ( (a) >>(fix1-16))
  30 #define ffrac(a) (0)
  31
  32
  33 /* mapping of fft functions */
  34
  35 #ifdef FIXEDPOINT
  36 #define mayer_realifft imayer_realifft
  37 #define mayer_realfft imayer_realfft
  38 #define mayer_fft imayer_fft
  39 #define mayer_ifft imayer_ifft
  40 #endif
  41
  42 #ifdef FIXEDPOINT
  43 #define SCALE16(x) (x>>(fix1-15))
  44 #define SCALE32(x) (x<<(32-fix1))
  45 #define INVSCALE16(x) (x<<8)
  46 #else
  47 #define SCALE16(x) (32767.*x)
  48 #define SCALE32(x) (2147483648.*x)
  49 #define INVSCALE16(x) ((float)3.051850e-05*x)
  50 #endif
  51
  52
  53 #endif
  54
  55
  56 #ifndef __M_FIXED_H__
  57 #define __M_FIXED_H__
  58
  59 typedef int t_sample;
  60
  61 #define t_fixed int
  62 #define fix1 18  /* (18) number of bits after comma */
  63
  64
  65 #define fixfac ((float)(1<<fix1))  /* float factor (for scaling ftofix ..) */
  66
  67
  68 /* fixed point multiplication and division */
  69
  70 #define mult(a,b) (long long)(((long long) (a) * (long long) (b))>>fix1)
  71 #define idiv(a,b) ((((long long) (a) )<<fix1)/(long long) (b) )
  72
  73 /* conversion macros */
  74
  75 #define itofix(a) ((a) << fix1)
  76 #define ftofix(a) ((t_fixed)( (a) *(double)fixfac + 0.5))
  77
  78 #define fixtof(a) ((double) (a) * 1./(fixfac-0.5))
  79 #define fixtoi(a) ((a) >>fix1)
  80
  81
  82 /* Not working !! */
  83
  84 #define fnum(a) ( (a) >>(fix1-16))
  85 #define ffrac(a) (0)
  86
  87
  88 /* mapping of fft functions */
  89
  90 #ifdef FIXEDPOINT
  91 #define mayer_realifft imayer_realifft
  92 #define mayer_realfft imayer_realfft
  93 #define mayer_fft imayer_fft
  94 #define mayer_ifft imayer_ifft
  95 #endif
  96
  97 #ifdef FIXEDPOINT
  98 #define SCALE16(x) (x>>(fix1-15))
  99 #define SCALE32(x) (x<<(32-fix1))
 100 #define INVSCALE16(x) (x<<8)
 101 #else
 102 #define SCALE16(x) (32767.*x)
 103 #define SCALE32(x) (2147483648.*x)
 104 #define INVSCALE16(x) ((float)3.051850e-05*x)
 105 #endif
 106
 107
 108 #endif
 109
 110