MPN_MUL_N_RECURSE
MPN_MUL_N_RECURSE(prodp, up, vp, esize, tspace);
MPN_MUL_N_RECURSE(prodp + size, up + hsize, vp + hsize, hsize,
MPN_MUL_N_RECURSE(tspace, prodp, prodp + hsize, hsize,
MPN_MUL_N_RECURSE(tspace, up, vp, hsize, tspace + size);
MPN_MUL_N_RECURSE(prodp, up, vp, vsize, ctx->tspace);
MPN_MUL_N_RECURSE(ctx->tp, up, vp, vsize, ctx->tspace);