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 35.

Table 35 – XML Data Type Mappings for Floating-Point

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).