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z3/lib/degree_shift_tactic.h
Leonardo de Moura e9eab22e5c Z3 sources
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2012-10-02 11:35:25 -07:00

32 lines
612 B
C++

/*++
Copyright (c) 2011 Microsoft Corporation
Module Name:
degree_shift_tactic.h
Abstract:
Simple degree shift procedure.
Basic idea: if goal G contains a real variable x, x occurs with degrees
d_1, ..., d_k in G, and n = gcd(d_1, ..., d_k) > 1.
Then, replace x^n with a new fresh variable y.
Author:
Leonardo de Moura (leonardo) 2011-12-30.
Revision History:
--*/
#ifndef _DEGREE_SHIFT_TACTIC_H_
#define _DEGREE_SHIFT_TACTIC_H_
#include"params.h"
class ast_manager;
class tactic;
tactic * mk_degree_shift_tactic(ast_manager & m, params_ref const & p = params_ref());
#endif