static void apply_dit(const plan *ego_, R *rio, R *iio)
{
const P *ego = (const P *) ego_;
plan_dft *cld;
bytwiddle(ego, rio, iio);
cld = (plan_dft *) ego->cld;
cld->apply(ego->cld, rio, iio, rio, iio);
}
static void apply_dif(const plan *ego_, R *IO)
{
const P *ego = (const P *) ego_;
INT start;
plan_rdft *cld, *cld0;
reorder_dif(ego, IO);
cld0 = (plan_rdft *) ego->cld0;
cld0->apply(ego->cld0, IO, IO);
start = ego->mstart1 * ego->s;
cld = (plan_rdft *) ego->cld;
cld->apply(ego->cld, IO + start, IO + start);
bytwiddle(ego, IO, K(1.0));
}