mpihelp_add_n
cy = mpihelp_add_n(res_ptr, s1_ptr, s2_ptr, s2_size);
mpi_limb_t mpihelp_add_n(mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr,
mpihelp_add_n(np, np, dp, dsize);
cy = mpihelp_add_n(prodp + size, prodp + size,
mpihelp_add_n(prodp + hsize, prodp + hsize, tspace,
cy += mpihelp_add_n(prodp + hsize, prodp + hsize, tspace, size);
cy = mpihelp_add_n(prodp + hsize, prodp + hsize, tspace + hsize,
cy_limb = mpihelp_add_n(prodp, prodp, up, size);
cy = mpihelp_add_n(prodp + size, prodp + size,
cy += mpihelp_add_n(prodp + hsize, prodp + hsize, tspace, size);
cy = mpihelp_add_n(prodp + hsize, prodp + hsize, tspace + hsize,
cy = mpihelp_add_n(prodp, prodp, ctx->tp, vsize);
cy = mpihelp_add_n(prodp, prodp, ctx->tspace, vsize);
cy = mpihelp_add_n(prodp, prodp, up,
cy = mpihelp_add_n(prodp, prodp, up, size);