Package com.google.ortools.sat

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, java.io.Serializable, java.lang.Comparable<SatParameters.FPRoundingMethod>, java.lang.constant.Constable
Enclosing class:
SatParameters
public static enum SatParameters.FPRoundingMethod
extends java.lang.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

    java.lang.Enum.EnumDesc<E extends java.lang.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 int ACTIVE_LOCK_BASED_VALUE
    Similar to lock based rounding except this only considers locks of active constraints from the last lp solve.
    static 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 int NEAREST_INTEGER_VALUE
    Rounds to the nearest integer value.
    static 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()  
    com.google.protobuf.Descriptors.EnumDescriptor getDescriptorForType()  
    int getNumber()  
    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​(java.lang.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​(java.lang.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:
      java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
      java.lang.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:
      java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
      java.lang.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 final 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:
      java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
      java.lang.NullPointerException - if the argument is null