35     int k;  in perm_twiddles()  local
45     for (k = 0; k < 5; k++) {  in perm_twiddles()
46         tmp[6*k + 0] = s->exptab[k +  0];  in perm_twiddles()
47         tmp[6*k + 2] = s->exptab[k +  5];  in perm_twiddles()
48         tmp[6*k + 4] = s->exptab[k + 10];  in perm_twiddles()
50         tmp[6*k + 1] = s->exptab[2 * (k + 0)];  in perm_twiddles()
51         tmp[6*k + 3] = s->exptab[2 * (k + 5)];  in perm_twiddles()
52         tmp[6*k + 5] = s->exptab[2 *  k + 5 ];  in perm_twiddles()
55     for (k = 0; k < 6; k++) {  in perm_twiddles()
57             { tmp[6*1 + k].re,  tmp[6*1 + k].re },  in perm_twiddles()
58             { tmp[6*2 + k].re,  tmp[6*2 + k].re },  in perm_twiddles()
59             { tmp[6*3 + k].re,  tmp[6*3 + k].re },  in perm_twiddles()
60             { tmp[6*4 + k].re,  tmp[6*4 + k].re },  in perm_twiddles()
61             { tmp[6*1 + k].im, -tmp[6*1 + k].im },  in perm_twiddles()
62             { tmp[6*2 + k].im, -tmp[6*2 + k].im },  in perm_twiddles()
63             { tmp[6*3 + k].im, -tmp[6*3 + k].im },  in perm_twiddles()
64             { tmp[6*4 + k].im, -tmp[6*4 + k].im },  in perm_twiddles()
66         memcpy(s->exptab + 8*k, ac_exp, 8*sizeof(FFTComplex));  in perm_twiddles()
70     for (k = 0; k < 3; k++) {  in perm_twiddles()
72             { tmp[2*k + 0].re, -tmp[2*k + 0].im },  in perm_twiddles()
73             { tmp[2*k + 0].im,  tmp[2*k + 0].re },  in perm_twiddles()
74             { tmp[2*k + 1].re, -tmp[2*k + 1].im },  in perm_twiddles()
75             { tmp[2*k + 1].im,  tmp[2*k + 1].re },  in perm_twiddles()
77         memcpy(s->exptab + 8*6 + 4*k, dc_exp, 4*sizeof(FFTComplex));  in perm_twiddles()