def_module_params(module_name='rewriter',
                  class_name='poly_rewriter_params',
                  export=True,
                  params=(("som", BOOL, False, "put polynomials in sum-of-monomials form"),
                          ("som_blowup", UINT, 10, "maximum increase of monomials generated when putting a polynomial in sum-of-monomials normal form"),
                          ("hoist_mul", BOOL, False, "hoist multiplication over summation to minimize number of multiplications"),
                          ("hoist_ite", BOOL, False, "hoist shared summands under ite expressions"),
                          ("flat", BOOL, True, "create nary applications for and,or,+,*,bvadd,bvmul,bvand,bvor,bvxor")))