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https://github.com/Z3Prover/z3
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FPA: Switched default value representation to 3-bitvector
Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
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47325c5fd3
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@ -222,34 +222,55 @@ format * smt2_pp_environment::pp_bv_literal(app * t, bool use_bv_lits, bool bv_n
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return vf;
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}
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format * smt2_pp_environment::pp_float_literal(app * t) {
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format * smt2_pp_environment::pp_float_literal(app * t, bool use_bv_lits) {
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mpf_manager & fm = get_futil().fm();
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scoped_mpf v(fm);
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ast_manager & m = get_manager();
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format * body = 0;
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string_buffer<> buf;
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VERIFY(get_futil().is_value(t, v));
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if (fm.is_nan(v)) {
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body = mk_string(get_manager(), "NaN");
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buf << "(_ NaN " << v.get().get_ebits() << " " << v.get().get_sbits() << ")";
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return mk_string(get_manager(), buf.c_str());
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}
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else if (fm.is_pinf(v)) {
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body = mk_string(get_manager(), "plusInfinity");
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buf << "(_ +oo " << v.get().get_ebits() << " " << v.get().get_sbits() << ")";
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return mk_string(get_manager(), buf.c_str());
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}
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else if (fm.is_ninf(v)) {
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body = mk_string(get_manager(), "minusInfinity");
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buf << "(_ -oo " << v.get().get_ebits() << " " << v.get().get_sbits() << ")";
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return mk_string(get_manager(), buf.c_str());
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}
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else if (fm.is_pzero(v)) {
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// TODO: make it SMT 2.0 compatible
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body = mk_string(get_manager(), "+0.0");
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else if (fm.is_pzero(v)) {
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buf << "(_ +zero " << v.get().get_ebits() << " " << v.get().get_sbits() << ")";
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return mk_string(get_manager(), buf.c_str());
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}
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else if (fm.is_nzero(v)) {
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// TODO: make it SMT 2.0 compatible
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body = mk_string(get_manager(), "-0.0");
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buf << "(_ -zero " << v.get().get_ebits() << " " << v.get().get_sbits() << ")";
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return mk_string(get_manager(), buf.c_str());
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}
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else {
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// TODO: make it SMT 2.0 compatible
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std::string val = fm.to_string(v);
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body = mk_string(get_manager(), val.c_str());
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else {
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buf << "(fp #b" << (fm.sgn(v) ? 1 : 0);
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body = mk_string(get_manager(), buf.c_str());
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body = mk_compose(m, body, mk_string(get_manager(), " "));
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mpf_exp_t exp = fm.exp(v);
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const mpz & bias = fm.m_powers2.m1(v.get().get_ebits() - 1);
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mpf_exp_t biased_exp = exp + fm.mpz_manager().get_int64(bias);
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app_ref e_biased_exp(m);
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e_biased_exp = get_bvutil().mk_numeral(biased_exp, v.get().get_ebits());
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body = mk_compose(m, body, pp_bv_literal(e_biased_exp, use_bv_lits, false));
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body = mk_compose(m, body, mk_string(get_manager(), " "));
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scoped_mpz sig(fm.mpz_manager());
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sig = fm.sig(v);
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app_ref e_sig(m);
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e_sig = get_bvutil().mk_numeral(rational(sig), v.get().get_sbits() - 1);
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body = mk_compose(m, body, pp_bv_literal(e_sig, use_bv_lits, false));
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body = mk_compose(m, body, mk_string(get_manager(), ")"));
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return body;
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}
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return pp_as(body, get_manager().get_sort(t));
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}
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// generate (- f)
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@ -544,7 +565,7 @@ class smt2_printer {
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f = m_env.pp_bv_literal(c, m_pp_bv_lits, m_pp_bv_neg);
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}
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else if (m_env.get_futil().is_value(c)) {
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f = m_env.pp_float_literal(c);
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f = m_env.pp_float_literal(c, m_pp_bv_lits);
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}
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else if (m_env.get_dlutil().is_numeral(c)) {
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f = m_env.pp_datalog_literal(c);
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@ -52,7 +52,7 @@ public:
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virtual format_ns::format * pp_fdecl(func_decl * f, unsigned & len);
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virtual format_ns::format * pp_bv_literal(app * t, bool use_bv_lits, bool bv_neg);
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virtual format_ns::format * pp_arith_literal(app * t, bool decimal, unsigned prec);
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virtual format_ns::format * pp_float_literal(app * t);
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virtual format_ns::format * pp_float_literal(app * t, bool use_bv_lits);
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virtual format_ns::format * pp_datalog_literal(app * t);
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virtual format_ns::format * pp_sort(sort * s);
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virtual format_ns::format * pp_fdecl_ref(func_decl * f);
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