505   p224_felem ftmp, ftmp2, ftmp3, ftmp4;  in p224_felem_inv()  local
517   p224_felem_reduce(ftmp2, tmp);  // 2^4 - 2  in p224_felem_inv()
518   p224_felem_square(tmp, ftmp2);  in p224_felem_inv()
519   p224_felem_reduce(ftmp2, tmp);  // 2^5 - 4  in p224_felem_inv()
520   p224_felem_square(tmp, ftmp2);  in p224_felem_inv()
521   p224_felem_reduce(ftmp2, tmp);  // 2^6 - 8  in p224_felem_inv()
522   p224_felem_mul(tmp, ftmp2, ftmp);  in p224_felem_inv()
525   p224_felem_reduce(ftmp2, tmp);  // 2^7 - 2  in p224_felem_inv()
527     p224_felem_square(tmp, ftmp2);  in p224_felem_inv()
528     p224_felem_reduce(ftmp2, tmp);  in p224_felem_inv()
530   p224_felem_mul(tmp, ftmp2, ftmp);  in p224_felem_inv()
531   p224_felem_reduce(ftmp2, tmp);  // 2^12 - 1  in p224_felem_inv()
532   p224_felem_square(tmp, ftmp2);  in p224_felem_inv()
538   p224_felem_mul(tmp, ftmp3, ftmp2);  in p224_felem_inv()
539   p224_felem_reduce(ftmp2, tmp);  // 2^24 - 1  in p224_felem_inv()
540   p224_felem_square(tmp, ftmp2);  in p224_felem_inv()
546   p224_felem_mul(tmp, ftmp3, ftmp2);  in p224_felem_inv()
562   p224_felem_mul(tmp, ftmp2, ftmp4);  in p224_felem_inv()
563   p224_felem_reduce(ftmp2, tmp);  // 2^120 - 1  in p224_felem_inv()
565     p224_felem_square(tmp, ftmp2);  in p224_felem_inv()
566     p224_felem_reduce(ftmp2, tmp);  in p224_felem_inv()
568   p224_felem_mul(tmp, ftmp2, ftmp);  in p224_felem_inv()
612   p224_felem delta, gamma, beta, alpha, ftmp, ftmp2;  in p224_point_double()  local
615   p224_felem_assign(ftmp2, x_in);  in p224_point_double()
632   p224_felem_sum(ftmp2, delta);  in p224_point_double()
634   p224_felem_scalar(ftmp2, 3);  in p224_point_double()
636   p224_felem_mul(tmp, ftmp, ftmp2);  in p224_point_double()
698   p224_felem ftmp, ftmp2, ftmp3, ftmp4, ftmp5, x_out, y_out, z_out;  in p224_point_add()  local
705     p224_felem_reduce(ftmp2, tmp);  in p224_point_add()
708     p224_felem_mul(tmp, ftmp2, z2);  in p224_point_add()
716     p224_felem_mul(tmp2, ftmp2, x1);  in p224_point_add()
717     p224_felem_reduce(ftmp2, tmp2);  in p224_point_add()
725     p224_felem_assign(ftmp2, x1);  in p224_point_add()
750   p224_felem_diff_128_64(tmp, ftmp2);  in p224_point_add()
789   p224_felem_mul(tmp, ftmp2, ftmp);  in p224_point_add()
790   p224_felem_reduce(ftmp2, tmp);  in p224_point_add()
805   p224_felem_assign(ftmp5, ftmp2);  in p224_point_add()
816   p224_felem_diff(ftmp2, x_out);  in p224_point_add()
820   p224_felem_mul(tmp2, ftmp3, ftmp2);  in p224_point_add()