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 24.

Table 24– 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).