<float> Element Reference

The <float> element defines a 32 bit single precision floating point number. This is the standard floating point number representation used on all modern computer architectures.

Detail

The following XDDL file describes a message with one float value.

    <xddl>
     <structure>
      <field name="uint" length="32"/>
      <float name="float"/>
     </structure>
    </xddl>

    float.xddl

Decoding a message with the number 40.875:

    # idm float.xddl 4223800042238000

    Name                           Length Value    Hex        Description 
    uint                           32     1109622784 42238000   
    float                          32     40.875   42238000   

As you can see, using <float> just tells the IDM to interpret the bit pattern as a float instead of an unsigned integer.

Notice there is no length field to the <float> element. The length is fixed at 32 bits.

type

The optional type attribute may reference a <type> element, just like the <field> element. However, the type must be formatted. <enum> types will be ignored.