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fix #2831 again

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-12-28 18:44:33 -08:00
parent 2f8303393b
commit ce4e71fbe9
3 changed files with 37 additions and 8 deletions
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15
src/ast/arith_decl_plugin.cpp
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@ -811,13 +811,24 @@ bool arith_util::is_considered_uninterpreted(func_decl* f, unsigned n, expr* con
return true;
}
if (is_decl_of(f, m_afid, OP_POWER) && is_numeral(args[1], r) && r.is_zero() && is_numeral(args[0], r) && r.is_zero()) {
sort* rs[2] = { mk_real(), mk_real() };
f_out = m_manager.mk_func_decl(m_afid, OP_POWER0, 0, nullptr, 2, rs, mk_real());
f_out = is_int(args[0]) ? mk_ipower0() : mk_rpower0();
return true;
}
return plugin().is_considered_uninterpreted(f);
}
func_decl* arith_util::mk_ipower0() {
sort* s = mk_int();
sort* rs[2] = { s, s };
return m_manager.mk_func_decl(m_afid, OP_POWER0, 0, nullptr, 2, rs, s);
}
func_decl* arith_util::mk_rpower0() {
sort* s = mk_real();
sort* rs[2] = { s, s };
return m_manager.mk_func_decl(m_afid, OP_POWER0, 0, nullptr, 2, rs, s);
}
func_decl* arith_util::mk_div0() {
sort* rs[2] = { mk_real(), mk_real() };
return m_manager.mk_func_decl(m_afid, OP_DIV0, 0, nullptr, 2, rs, mk_real());