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fix #1841

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-11-22 15:28:33 -08:00
parent 7bc3b4e381
commit f591e0948a
8 changed files with 209 additions and 210 deletions
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5
src/ast/arith_decl_plugin.h
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@ -231,6 +231,11 @@ public:
bool is_arith_expr(expr const * n) const { return is_app(n) && to_app(n)->get_family_id() == m_afid; }
bool is_irrational_algebraic_numeral(expr const * n) const;
bool is_unsigned(expr const * n, unsigned& u) const {
rational val;
bool is_int = true;
return is_numeral(n, val, is_int) && is_int && val.is_unsigned(), u = val.get_unsigned(), true;
}
bool is_numeral(expr const * n, rational & val, bool & is_int) const;
bool is_numeral(expr const * n, rational & val) const { bool is_int; return is_numeral(n, val, is_int); }
bool is_numeral(expr const * n) const { return is_app_of(n, m_afid, OP_NUM); }