DyLP
1.10.4
CoinUtils
src
CoinPresolveZeros.hpp
Go to the documentation of this file.
1
/* $Id: CoinPresolveZeros.hpp 2083 2019-01-06 19:38:09Z unxusr $ */
2
// Copyright (C) 2002, International Business Machines
3
// Corporation and others. All Rights Reserved.
4
// This code is licensed under the terms of the Eclipse Public License (EPL).
5
6
#ifndef CoinPresolveZeros_H
7
#define CoinPresolveZeros_H
8
14
#define DROP_ZERO 8
15
22
struct
dropped_zero
{
23
int
row
;
24
int
col
;
25
};
26
32
class
drop_zero_coefficients_action
:
public
CoinPresolveAction
{
33
34
const
int
nzeros_
;
35
const
dropped_zero
*
const
zeros_
;
36
37
drop_zero_coefficients_action
(
int
nzeros,
38
const
dropped_zero
*zeros,
39
const
CoinPresolveAction
*next)
40
:
CoinPresolveAction
(next)
41
, nzeros_(nzeros)
42
, zeros_(zeros)
43
{
44
}
45
46
public
:
47
const
char
*
name
()
const
{
return
(
"drop_zero_coefficients_action"
); }
48
49
static
const
CoinPresolveAction
*presolve(
CoinPresolveMatrix
*prob,
50
int
*checkcols,
51
int
ncheckcols,
52
const
CoinPresolveAction
*next);
53
54
void
postsolve(
CoinPostsolveMatrix
*prob)
const
;
55
56
virtual
~drop_zero_coefficients_action
() {
deleteAction
(zeros_,
dropped_zero
*); }
57
};
58
59
const
CoinPresolveAction
*
drop_zero_coefficients
(
CoinPresolveMatrix
*prob,
60
const
CoinPresolveAction
*next);
61
62
#endif
63
64
/* vi: softtabstop=2 shiftwidth=2 expandtab tabstop=2
65
*/
CoinPresolveAction
Abstract base class of all presolve routines.
Definition:
CoinPresolveMatrix.hpp:163
deleteAction
#define deleteAction(array, type)
Definition:
CoinPresolveMatrix.hpp:38
drop_zero_coefficients_action::nzeros_
const int nzeros_
Definition:
CoinPresolveZeros.hpp:34
drop_zero_coefficients
const CoinPresolveAction * drop_zero_coefficients(CoinPresolveMatrix *prob, const CoinPresolveAction *next)
drop_zero_coefficients_action::name
const char * name() const
A name for debug printing.
Definition:
CoinPresolveZeros.hpp:47
drop_zero_coefficients_action::~drop_zero_coefficients_action
virtual ~drop_zero_coefficients_action()
Definition:
CoinPresolveZeros.hpp:56
dropped_zero::col
int col
Definition:
CoinPresolveZeros.hpp:24
CoinPostsolveMatrix
Augments CoinPrePostsolveMatrix with information about the problem that is only needed during postsol...
Definition:
CoinPresolveMatrix.hpp:1552
drop_zero_coefficients_action::drop_zero_coefficients_action
drop_zero_coefficients_action(int nzeros, const dropped_zero *zeros, const CoinPresolveAction *next)
Definition:
CoinPresolveZeros.hpp:37
dropped_zero
Tracking information for an explicit zero coefficient.
Definition:
CoinPresolveZeros.hpp:22
CoinPresolveMatrix
Augments CoinPrePostsolveMatrix with information about the problem that is only needed during presolv...
Definition:
CoinPresolveMatrix.hpp:905
dropped_zero::row
int row
Definition:
CoinPresolveZeros.hpp:23
drop_zero_coefficients_action::zeros_
const dropped_zero *const zeros_
Definition:
CoinPresolveZeros.hpp:35
drop_zero_coefficients_action
Removal of explicit zeros.
Definition:
CoinPresolveZeros.hpp:32
Generated by
1.8.13