org.apache.sysds.runtime.functionobjects

## Class LessThan

- java.lang.Object
- - org.apache.sysds.runtime.functionobjects.FunctionObject
  - - org.apache.sysds.runtime.functionobjects.ValueFunction
    - - org.apache.sysds.runtime.functionobjects.ValueComparisonFunction
      - - org.apache.sysds.runtime.functionobjects.LessThan

- All Implemented Interfaces:
    Serializable

      public class LessThan
      extends ValueComparisonFunction

  See Also:
    Serialized Form

- - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `compare(boolean in1, boolean in2)`
    `boolean` | `compare(double in1, double in2)`
    `boolean` | `compare(long in1, long in2)`
    `boolean` | `compare(String in1, String in2)`
    `double` | `execute(double in1, double in2)` execute() method that returns double is required since current map-reduce runtime can only produce matrices of doubles.
    `static LessThan` | `getLessThanFnObject()`

    - ### Methods inherited from class org.apache.sysds.runtime.functionobjects.ValueFunction

      `requiresCorrection`

    - ### Methods inherited from class org.apache.sysds.runtime.functionobjects.FunctionObject

      `clone, execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, execute`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Method Detail

    - #### getLessThanFnObject

          public static LessThan getLessThanFnObject()

    - #### execute

          public double execute(double in1,
                                double in2)

      execute() method that returns double is required since current map-reduce runtime can only produce matrices of doubles. This method is used on MR side to perform comparisons on matrices like A<B and A<2.5
      Overrides:
        `execute` in class `FunctionObject`

    - #### compare

          public boolean compare(double in1,
                                 double in2)

      Specified by:
        `compare` in class `ValueComparisonFunction`

    - #### compare

          public boolean compare(long in1,
                                 long in2)

      Specified by:
        `compare` in class `ValueComparisonFunction`

    - #### compare

          public boolean compare(boolean in1,
                                 boolean in2)

      Specified by:
        `compare` in class `ValueComparisonFunction`

    - #### compare

          public boolean compare(String in1,
                                 String in2)

      Specified by:
        `compare` in class `ValueComparisonFunction`

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