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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-05-25 14:11:51 -07:00
parent 4e01d5b5c1
commit e938ee33bb
2 changed files with 92 additions and 17 deletions
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6
src/ast/rewriter/arith_rewriter.h
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@ -21,11 +21,13 @@ Notes:
#include "ast/rewriter/poly_rewriter.h"
#include "ast/arith_decl_plugin.h"
#include "ast/seq_decl_plugin.h"
class arith_rewriter_core {
protected:
typedef rational numeral;
arith_util m_util;
seq_util m_seq;
bool m_expand_power;
bool m_mul2power;
bool m_expand_tan;
@ -43,7 +45,7 @@ protected:
bool use_power() const { return m_mul2power && !m_expand_power; }
decl_kind power_decl_kind() const { return OP_POWER; }
public:
arith_rewriter_core(ast_manager & m):m_util(m) {}
arith_rewriter_core(ast_manager & m):m_util(m), m_seq(m) {}
bool is_zero(expr * n) const { return m_util.is_zero(n); }
};
@ -64,7 +66,7 @@ class arith_rewriter : public poly_rewriter<arith_rewriter_core> {
enum op_kind { LE, GE, EQ };
static op_kind inv(op_kind k) { return k == LE ? GE : (k == GE ? LE : EQ); }
bool is_bound(expr * arg1, expr * arg2, op_kind kind, expr_ref & result);
bool is_separated(expr * arg1, expr * arg2, op_kind kind, expr_ref & result);
br_status is_separated(expr * arg1, expr * arg2, op_kind kind, expr_ref & result);
bool is_non_negative(expr* e);
br_status mk_le_ge_eq_core(expr * arg1, expr * arg2, op_kind kind, expr_ref & result);