Lines Matching refs:DFT_DATA_LENGTH
32 #define DFT_SPEC_LENGTH (DFT_DATA_LENGTH / 2)
43 { static double orig [DFT_DATA_LENGTH] ;
44 static double test [DFT_DATA_LENGTH] ;
47 if (len != DFT_DATA_LENGTH)
71 if (len != DFT_DATA_LENGTH)
102 { static double cos_angle [DFT_DATA_LENGTH] = { 0.0 } ;
103 static double sin_angle [DFT_DATA_LENGTH] ;
110 for (n = 0 ; n < DFT_DATA_LENGTH ; n++)
111 { cos_angle [n] = cos (2.0 * M_PI * n / DFT_DATA_LENGTH) ;
112 sin_angle [n] = -1.0 * sin (2.0 * M_PI * n / DFT_DATA_LENGTH) ;
120 for (n = 0 ; n < DFT_DATA_LENGTH ; n++)
121 { real_part += data [n] * cos_angle [(k * n) % DFT_DATA_LENGTH] ;
122 imag_part += data [n] * sin_angle [(k * n) % DFT_DATA_LENGTH] ;