CoinPresolveMatrix.hpp File Reference

Declarations for CoinPresolveMatrix and CoinPostsolveMatrix and their common base class CoinPrePostsolveMatrix. More...

#include "CoinPragma.hpp"
#include "CoinPackedMatrix.hpp"
#include "CoinMessage.hpp"
#include "CoinTime.hpp"
#include <cmath>
#include <cassert>
#include <cfloat>
#include <cstdlib>

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Classes
class	CoinPresolveAction
	Abstract base class of all presolve routines. More...
class	CoinPrePostsolveMatrix
	Collects all the information about the problem that is needed in both presolve and postsolve. More...
class	presolvehlink
	Links to aid in packed matrix modification. More...
class	CoinPresolveMatrix
	Augments CoinPrePostsolveMatrix with information about the problem that is only needed during presolve. More...
class	CoinPostsolveMatrix
	Augments CoinPrePostsolveMatrix with information about the problem that is only needed during postsolve. More...

Macros
#define	deleteAction(array, type)   delete[] array
#define	PRESOLVEASSERT(x)
#define	PRESOLVE_STMT(s)
#define	PRESOLVE_DETAIL_PRINT(s)
#define	PRESOLVE_INF   COIN_DBL_MAX
	The usual finite infinity. More...
#define	PRESOLVE_SMALL_INF   1.0e20
	And a small infinity. More...
#define	PRESOLVEFINITE(n)   (-PRESOLVE_INF < (n) && (n) < PRESOLVE_INF)
	Check for infinity using finite infinity. More...
#define	NO_LINK   -66666666

Functions
void	DIE (const char *)
double *	presolve_dupmajor (const double *elems, const int *indices, int length, CoinBigIndex offset, int tgt=-1)
	Duplicate a major-dimension vector; optionally omit the entry with minor index tgt. More...
void	coin_init_random_vec (double *work, int n)
	Initialize a vector with random numbers. More...

Variables
const double	ZTOLDP = 1e-12
	Zero tolerance. More...
const double	ZTOLDP2 = 1e-10
	Alternate zero tolerance. More...

Detailed Description

Declarations for CoinPresolveMatrix and CoinPostsolveMatrix and their common base class CoinPrePostsolveMatrix.

Also declarations for CoinPresolveAction and a number of non-member utility functions.

Definition in file CoinPresolveMatrix.hpp.

Macro Definition Documentation

#define deleteAction	(		array,
			type
	)		delete[] array

Definition at line 38 of file CoinPresolveMatrix.hpp.

#define PRESOLVEASSERT

(

x

)

Value:

{                       \
  }

Definition at line 72 of file CoinPresolveMatrix.hpp.

#define PRESOLVE_STMT

(

s

)

Value:

{                      \
  }

Definition at line 75 of file CoinPresolveMatrix.hpp.

#define PRESOLVE_DETAIL_PRINT

(

s

)

Value:

{                              \
  }

Definition at line 87 of file CoinPresolveMatrix.hpp.

#define PRESOLVE_INF   COIN_DBL_MAX

The usual finite infinity.

Definition at line 106 of file CoinPresolveMatrix.hpp.

#define PRESOLVE_SMALL_INF   1.0e20

And a small infinity.

Definition at line 108 of file CoinPresolveMatrix.hpp.

#define PRESOLVEFINITE

(

n

)

(-PRESOLVE_INF < (n) && (n) < PRESOLVE_INF)

Check for infinity using finite infinity.

Definition at line 110 of file CoinPresolveMatrix.hpp.

#define NO_LINK   -66666666

Definition at line 814 of file CoinPresolveMatrix.hpp.

Function Documentation

void DIE ( const char *  )

inline

Definition at line 79 of file CoinPresolveMatrix.hpp.

Variable Documentation

const double ZTOLDP = 1e-12

Zero tolerance.

OSL had a fixed zero tolerance; we still use that here.

Definition at line 98 of file CoinPresolveMatrix.hpp.

const double ZTOLDP2 = 1e-10

Alternate zero tolerance.

Use a different one if we are doing doubletons, etc.

Definition at line 103 of file CoinPresolveMatrix.hpp.