Enum SatParameters.FPRoundingMethod

java.lang.Object

java.lang.Enum<SatParameters.FPRoundingMethod>

com.google.ortools.sat.SatParameters.FPRoundingMethod

All Implemented Interfaces:

com.google.protobuf.Internal.EnumLite, com.google.protobuf.ProtocolMessageEnum, Serializable, Comparable<SatParameters.FPRoundingMethod>, java.lang.constant.Constable

Enclosing class:

SatParameters

public static enum SatParameters.FPRoundingMethod
extends Enum<SatParameters.FPRoundingMethod>
implements com.google.protobuf.ProtocolMessageEnum

 Rounding method to use for feasibility pump.
 

Protobuf enum operations_research.sat.SatParameters.FPRoundingMethod

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ACTIVE_LOCK_BASED	Similar to lock based rounding except this only considers locks of active constraints from the last lp solve.
LOCK_BASED	Counts the number of linear constraints restricting the variable in the increasing values (up locks) and decreasing values (down locks).
NEAREST_INTEGER	Rounds to the nearest integer value.
PROPAGATION_ASSISTED	This is expensive rounding algorithm.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ACTIVE_LOCK_BASED_VALUE	Similar to lock based rounding except this only considers locks of active constraints from the last lp solve.
static final int	LOCK_BASED_VALUE	Counts the number of linear constraints restricting the variable in the increasing values (up locks) and decreasing values (down locks).
static final int	NEAREST_INTEGER_VALUE	Rounds to the nearest integer value.
static final int	PROPAGATION_ASSISTED_VALUE	This is expensive rounding algorithm.

Method Summary

Modifier and Type	Method	Description
static SatParameters.FPRoundingMethod	forNumber(int value)
static com.google.protobuf.Descriptors.EnumDescriptor	getDescriptor()
final com.google.protobuf.Descriptors.EnumDescriptor	getDescriptorForType()
final int	getNumber()
final com.google.protobuf.Descriptors.EnumValueDescriptor	getValueDescriptor()
static com.google.protobuf.Internal.EnumLiteMap<SatParameters.FPRoundingMethod>	internalGetValueMap()
static SatParameters.FPRoundingMethod	valueOf(int value)	Deprecated.
static SatParameters.FPRoundingMethod	valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc)	Returns the enum constant of this type with the specified name.
static SatParameters.FPRoundingMethod	valueOf(String name)	Returns the enum constant of this type with the specified name.
static SatParameters.FPRoundingMethod[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

NEAREST_INTEGER

public static final SatParameters.FPRoundingMethod NEAREST_INTEGER

 Rounds to the nearest integer value.
 

NEAREST_INTEGER = 0;

LOCK_BASED

public static final SatParameters.FPRoundingMethod LOCK_BASED

 Counts the number of linear constraints restricting the variable in the
 increasing values (up locks) and decreasing values (down locks). Rounds
 the variable in the direction of lesser locks.
 

LOCK_BASED = 1;

ACTIVE_LOCK_BASED

public static final SatParameters.FPRoundingMethod ACTIVE_LOCK_BASED

 Similar to lock based rounding except this only considers locks of active
 constraints from the last lp solve.
 

ACTIVE_LOCK_BASED = 3;

PROPAGATION_ASSISTED

public static final SatParameters.FPRoundingMethod PROPAGATION_ASSISTED

 This is expensive rounding algorithm. We round variables one by one and
 propagate the bounds in between. If none of the rounded values fall in
 the continuous domain specified by lower and upper bound, we use the
 current lower/upper bound (whichever one is closest) instead of rounding
 the fractional lp solution value. If both the rounded values are in the
 domain, we round to nearest integer.
 

PROPAGATION_ASSISTED = 2;

Field Details

NEAREST_INTEGER_VALUE

public static final int NEAREST_INTEGER_VALUE

 Rounds to the nearest integer value.
 

NEAREST_INTEGER = 0;

See Also:

• Constant Field Values

LOCK_BASED_VALUE

public static final int LOCK_BASED_VALUE

 Counts the number of linear constraints restricting the variable in the
 increasing values (up locks) and decreasing values (down locks). Rounds
 the variable in the direction of lesser locks.
 

LOCK_BASED = 1;

See Also:

• Constant Field Values

ACTIVE_LOCK_BASED_VALUE

public static final int ACTIVE_LOCK_BASED_VALUE

 Similar to lock based rounding except this only considers locks of active
 constraints from the last lp solve.
 

ACTIVE_LOCK_BASED = 3;

See Also:

• Constant Field Values

PROPAGATION_ASSISTED_VALUE

public static final int PROPAGATION_ASSISTED_VALUE

 This is expensive rounding algorithm. We round variables one by one and
 propagate the bounds in between. If none of the rounded values fall in
 the continuous domain specified by lower and upper bound, we use the
 current lower/upper bound (whichever one is closest) instead of rounding
 the fractional lp solution value. If both the rounded values are in the
 domain, we round to nearest integer.
 

PROPAGATION_ASSISTED = 2;

See Also:

• Constant Field Values

Method Details

values

public static SatParameters.FPRoundingMethod[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static SatParameters.FPRoundingMethod valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

getNumber

public final int getNumber()

Specified by:

getNumber in interface com.google.protobuf.Internal.EnumLite

Specified by:

getNumber in interface com.google.protobuf.ProtocolMessageEnum

valueOf

@Deprecated
public static SatParameters.FPRoundingMethod valueOf(int value)

Deprecated.

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

value - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

forNumber

public static SatParameters.FPRoundingMethod forNumber(int value)

Parameters:

value - The numeric wire value of the corresponding enum entry.

Returns:

The enum associated with the given numeric wire value.

internalGetValueMap

public static com.google.protobuf.Internal.EnumLiteMap<SatParameters.FPRoundingMethod> internalGetValueMap()

getValueDescriptor

public final com.google.protobuf.Descriptors.EnumValueDescriptor getValueDescriptor()

Specified by:

getValueDescriptor in interface com.google.protobuf.ProtocolMessageEnum

getDescriptorForType

public final com.google.protobuf.Descriptors.EnumDescriptor getDescriptorForType()

Specified by:

getDescriptorForType in interface com.google.protobuf.ProtocolMessageEnum

getDescriptor

public static com.google.protobuf.Descriptors.EnumDescriptor getDescriptor()

valueOf

public static SatParameters.FPRoundingMethod valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

desc - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null