blob: 98dc63b3f6b457b3c3de5432103943fd1a38721e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/******************************************************************************
* Top contributors (to current version):
* Yancheng Ou
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
* in the top-level source directory and their institutional affiliations.
* All rights reserved. See the file COPYING in the top-level source
* directory for licensing information.
* ****************************************************************************
*
* Optimizer for BitVector type.
*/
#ifndef CVC5__OMT__BITVECTOR_OPTIMIZER_H
#define CVC5__OMT__BITVECTOR_OPTIMIZER_H
#include "omt/omt_optimizer.h"
namespace cvc5::omt {
/**
* Optimizer for BitVector type
*/
class OMTOptimizerBitVector : public OMTOptimizer
{
public:
OMTOptimizerBitVector(bool isSigned);
virtual ~OMTOptimizerBitVector() = default;
std::pair<smt::OptResult, Node> minimize(SmtEngine* parentSMTSolver,
Node target) override;
std::pair<smt::OptResult, Node> maximize(SmtEngine* parentSMTSolver,
Node target) override;
private:
/**
* Computes the BitVector version of (a + b) / 2 without overflow,
* rounding towards -infinity: -1.5 --> -2 and 1.5 --> 1
* same as the rounding scheme for int32_t
**/
BitVector computeAverage(const BitVector& a,
const BitVector& b,
bool isSigned);
/** Is the BitVector doing signed comparison? **/
bool d_isSigned;
};
} // namespace cvc5::omt
#endif /* CVC5__OMT__BITVECTOR_OPTIMIZER_H */
|
