114                 fx32    xr, xi, yr, yi;  in MATHi_FFT()  local
121                 xi = data[i + 1];  in MATHi_FFT()
125                 data[i + 1] = xi + yi;  in MATHi_FFT()
127                 data[j + 1] = xi - yi;  in MATHi_FFT()
152                         fx32    xr, xi, yr, yi;  in MATHi_FFT()  local
158                         xi = data[j + 1];  in MATHi_FFT()
163                             fx32    t = FX_Mul(wr, xr + xi);  in MATHi_FFT()
164                             yr = t - FX_Mul(w1, xi);  in MATHi_FFT()
169                         xi = data[i + 1];  in MATHi_FFT()
171                         data[i + 1] = xi + yi;  in MATHi_FFT()
173                         data[j + 1] = xi - yi;  in MATHi_FFT()
182                         fx32    xr, xi, yr, yi;  in MATHi_FFT()  local
189                         xi = data[i + 1];  in MATHi_FFT()
197                         data[i + 1] = xi - yr;  in MATHi_FFT()
199                         data[j + 1] = xi + yr;  in MATHi_FFT()
266                 fx32    xr, xi, yr, yi;  in MATHi_IFFT()  local
273                 xi = data[i + 1];  in MATHi_IFFT()
277                 data[i + 1] = xi + yi;  in MATHi_IFFT()
279                 data[j + 1] = xi - yi;  in MATHi_IFFT()
300                         fx32    xr, xi, yr, yi;  in MATHi_IFFT()  local
306                         xi = data[j + 1];  in MATHi_IFFT()
311                             fx32    t = FX_Mul(wr, xr + xi);  in MATHi_IFFT()
312                             yr = t - FX_Mul(w1, xi);  in MATHi_IFFT()
317                         xi = data[i + 1];  in MATHi_IFFT()
319                         data[i + 1] = xi + yi;  in MATHi_IFFT()
321                         data[j + 1] = xi - yi;  in MATHi_IFFT()
330                         fx32    xr, xi, yr, yi;  in MATHi_IFFT()  local
337                         xi = data[i + 1];  in MATHi_IFFT()
341                         data[i + 1] = xi + yr;  in MATHi_IFFT()
343                         data[j + 1] = xi - yr;  in MATHi_IFFT()
398                     fx32    xr, xi, yr, yi;
404                     xi = data[i + 1];
408                     data[i + 1] = xi + yi;
410                     data[j + 1] = xi - yi;
427                         fx32    xr, xi, yr, yi;
434                         xi = data[j + 1];
439                             fx32    t = FX_Mul(wr, xr + xi);
440                             yr = t - FX_Mul(wr + wi, xi);
445                         xi = data[ik + 1];
447                         data[ik + 1] = xi + yi;
449                         data[j + 1] = xi - yi;
524         fx32    xr, xi, yr, yi, zr, zi;  in MATH_FFTReal()  local
550             xi = t - FX_Mul(wr + wi, zr);  in MATH_FFTReal()
554         data[i + 1] = yi + xi;  in MATH_FFTReal()
556         data[j + 1] = -yi + xi;  in MATH_FFTReal()
559         fx32    xr, xi;  in MATH_FFTReal()  local
561         xi = data[1];  in MATH_FFTReal()
562         data[0] = xr + xi;  in MATH_FFTReal()
563         data[1] = xr - xi;  in MATH_FFTReal()
593         fx32    yr, yi, zr, zi, xr, xi;  in MATH_IFFTReal()  local
619             xi = t - FX_Mul(wr + wi, zr);  in MATH_IFFTReal()
623         data[i + 1] = yi + xi;  in MATH_IFFTReal()
625         data[j + 1] = -yi + xi;  in MATH_IFFTReal()
628         fx32    xr, xi;  in MATH_IFFTReal()  local
630         xi = data[1];  in MATH_IFFTReal()
631         data[0] = (xr + xi);  in MATH_IFFTReal()
632         data[1] = (xr - xi);  in MATH_IFFTReal()