com.ibm.jzos.fields

Class ExternalFloatField

  • java.lang.Object
    • com.ibm.jzos.fields.ExternalFloatField
  • All Implemented Interfaces:
    DoubleAccessor, Field


    public class ExternalFloatField
    extends java.lang.Object
    implements DoubleAccessor
    A character floating point representation Field with double accessors. In Cobol, refered to as "External Float".

    Since:
    2.1.0
    • Constructor Summary

      Constructors 
      Constructor and Description
      ExternalFloatField(int offset, int precision, int scale, boolean mantSign, boolean expSign, boolean impliedDecimal)
      Construct an instance.
    • Method Summary

      Methods 
      Modifier and Type Method and Description
      boolean equals(java.lang.Double aDouble, double adouble)
      Compare a Double with a double for equality.
      int getByteLength()
      Answer the length of the field described by the receiver
      double getDouble(byte[] buffer)
      Return a double from the given byte array buffer, at the offset of this field.
      double getDouble(byte[] buffer, int bufOffset)
      Return a double from the given byte array buffer, at the bufOffset + offset of this field.
      int getLength() 
      int getOffset()
      Answer the offset of this field into some array of bytes
      int getPrecision() 
      int getScale() 
      boolean isImpliedDecimal() 
      boolean isShowExponentPlusSign() 
      boolean isShowMantissaPlusSign() 
      void putDouble(double value, byte[] buffer)
      Put a double value into the given byte array buffer, at the offset of this field.
      void putDouble(double value, byte[] buffer, int bufOffset)
      Put a double value into the given byte array buffer, at the bufOffset + offset of this field.
      void setOffset(int offset) 
      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • ExternalFloatField

        public ExternalFloatField(int offset,
                          int precision,
                          int scale,
                          boolean mantSign,
                          boolean expSign,
                          boolean impliedDecimal)
        Construct an instance.
        Parameters:
        offset - int the offset of this field
        precision - in the number of decimal degits of precision
        scale - the number of implied decimal digits in the fractional portion of the field
        mantSign - true if the '+' character is present for positive mantissa values. A minus character '-' is always present for negative values.
        expSign - true if the '+' character is present for positive exponent values A minus character '-' is always present for negative values.
        impliedDecimal - true if the decimal point is not explicit
    • Method Detail

      • getDouble

        public double getDouble(byte[] buffer)
        Return a double from the given byte array buffer, at the offset of this field.
        Specified by:
        getDouble in interface DoubleAccessor
        Parameters:
        buffer - the byte array
        Returns:
        double
      • getDouble

        public double getDouble(byte[] buffer,
                       int bufOffset)
        Return a double from the given byte array buffer, at the bufOffset + offset of this field.
        Specified by:
        getDouble in interface DoubleAccessor
        Parameters:
        buffer - the byte array
        bufOffset - the additional offset into the byte array
        Returns:
        double
      • putDouble

        public void putDouble(double value,
                     byte[] buffer)
        Put a double value into the given byte array buffer, at the offset of this field.
        Specified by:
        putDouble in interface DoubleAccessor
        Parameters:
        value - the double value
        buffer - the byte array
        Throws:
        java.lang.IllegalArgumentException - if the value is Infinity or NaN
      • putDouble

        public void putDouble(double value,
                     byte[] buffer,
                     int bufOffset)
        Put a double value into the given byte array buffer, at the bufOffset + offset of this field.
        Specified by:
        putDouble in interface DoubleAccessor
        Parameters:
        value - the double value
        buffer - the byte array
        bufOffset - the additional offset into the byte array
        Throws:
        java.lang.IllegalArgumentException - if the value is Infinity or NaN
      • getByteLength

        public int getByteLength()
        Description copied from interface: Field
        Answer the length of the field described by the receiver
        Specified by:
        getByteLength in interface Field
        Returns:
        int
        See Also:
        Field.getByteLength()
      • getOffset

        public int getOffset()
        Description copied from interface: Field
        Answer the offset of this field into some array of bytes
        Specified by:
        getOffset in interface Field
        Returns:
        int
        See Also:
        Field.getOffset()
      • equals

        public boolean equals(java.lang.Double aDouble,
                     double adouble)
        Compare a Double with a double for equality.
        Parameters:
        aDouble - possibly null
        adouble -
        Returns:
        boolean true if equal, false otherwise
      • isImpliedDecimal

        public boolean isImpliedDecimal()
      • getLength

        public int getLength()
      • getPrecision

        public int getPrecision()
      • getScale

        public int getScale()
      • isShowExponentPlusSign

        public boolean isShowExponentPlusSign()
      • isShowMantissaPlusSign

        public boolean isShowMantissaPlusSign()
© Copyright IBM Corporation 2005, 2014.