977 static void copy_conditional(felem out, const felem in, limb mask) {  in copy_conditional()  argument
981     const limb tmp = mask & (in[i] ^ out[i]);  in copy_conditional()
996     limb mask = i ^ index;  in select_affine_point()  local
997     mask |= mask >> 2;  in select_affine_point()
998     mask |= mask >> 1;  in select_affine_point()
999     mask &= 1;  in select_affine_point()
1000     mask--;  in select_affine_point()
1002       out_x[j] |= *table & mask;  in select_affine_point()
1005       out_y[j] |= *table & mask;  in select_affine_point()
1026     limb mask = i ^ index;  in select_jacobian_point()  local
1027     mask |= mask >> 2;  in select_jacobian_point()
1028     mask |= mask >> 1;  in select_jacobian_point()
1029     mask &= 1;  in select_jacobian_point()
1030     mask--;  in select_jacobian_point()
1032       out_x[j] |= *table & mask;  in select_jacobian_point()
1035       out_y[j] |= *table & mask;  in select_jacobian_point()
1038       out_z[j] |= *table & mask;  in select_jacobian_point()
1049   limb n_is_infinity_mask = -1, p_is_noninfinite_mask, mask;  in scalar_base_mult()  local
1091       mask = p_is_noninfinite_mask & ~n_is_infinity_mask;  in scalar_base_mult()
1092       copy_conditional(nx, tx, mask);  in scalar_base_mult()
1093       copy_conditional(ny, ty, mask);  in scalar_base_mult()
1094       copy_conditional(nz, tz, mask);  in scalar_base_mult()
1119   limb n_is_infinity_mask, index, p_is_noninfinite_mask, mask;  in scalar_mult()  local
1162     mask = p_is_noninfinite_mask & ~n_is_infinity_mask;  in scalar_mult()
1164     copy_conditional(nx, tx, mask);  in scalar_mult()
1165     copy_conditional(ny, ty, mask);  in scalar_mult()
1166     copy_conditional(nz, tz, mask);  in scalar_mult()