Floating point values are encoded using one of the XML floating point types. The mappings between the OPC UA floating point types and XML schema data types are shown in Table 34.

Table 34 – XML Data Type Mappings for Floating Points

Name	XML Type
Float	xs:float
Double	xs:double

The XML floating point type supports positive infinity (INF), negative infinity (-INF) and not-a-number (NaN).