105         for (int j = 0; j < n3; j++, x0++, x1++, x2++) {  in fft_bf3()  local
107             y0[j].re = x0->re + x1->re * w0[j][0].re - x1->im * w0[j][0].im  in fft_bf3()
108                               + x2->re * w0[j][1].re - x2->im * w0[j][1].im;  in fft_bf3()
110             y0[j].im = x0->im + x1->im * w0[j][0].re + x1->re * w0[j][0].im  in fft_bf3()
111                               + x2->im * w0[j][1].re + x2->re * w0[j][1].im;  in fft_bf3()
113             y1[j].re = x0->re + x1->re * w1[j][0].re - x1->im * w1[j][0].im  in fft_bf3()
114                               + x2->re * w1[j][1].re - x2->im * w1[j][1].im;  in fft_bf3()
116             y1[j].im = x0->im + x1->im * w1[j][0].re + x1->re * w1[j][0].im  in fft_bf3()
117                               + x2->im * w1[j][1].re + x2->re * w1[j][1].im;  in fft_bf3()
119             y2[j].re = x0->re + x1->re * w2[j][0].re - x1->im * w2[j][0].im  in fft_bf3()
120                               + x2->re * w2[j][1].re - x2->im * w2[j][1].im;  in fft_bf3()
122             y2[j].im = x0->im + x1->im * w2[j][0].re + x1->re * w2[j][0].im  in fft_bf3()
123                               + x2->im * w2[j][1].re + x2->re * w2[j][1].im;  in fft_bf3()
147         for (int j = 0; j < n2; j++, x0++, x1++) {  in fft_bf2()  local
149             y0[j].re = x0->re + x1->re * w[j].re - x1->im * w[j].im;  in fft_bf2()
150             y0[j].im = x0->im + x1->im * w[j].re + x1->re * w[j].im;  in fft_bf2()
152             y1[j].re = x0->re - x1->re * w[j].re + x1->im * w[j].im;  in fft_bf2()
153             y1[j].im = x0->im - x1->im * w[j].re - x1->re * w[j].im;  in fft_bf2()