#### IfcReal

Natural language names

##### Semantic definitions at the type

Type definition

A defined type of simple data type REAL (required since a select type, i.e. IfcSimpleValue, cannot include directly simple types in its select list). In principle, the domain of IfcReal (being a Real) is all rational, irrational and scientific real numbers. Here the precision is unconstrained, but in practice it is implementation specific.

Type: REAL

> HISTORY New type in IFC Release 1.5.1.

##### Formal representations

XSD Specification
`<xs:simpleType name="IfcReal">
<xs:restriction base="xs:double"/>
</xs:simpleType>
<xs:element name="IfcReal-wrapper" nillable="true">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="ifc:IfcReal">
<xs:attributeGroup ref="ifc:instanceAttributes"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>
`
EXPRESS Specification
`TYPE IfcReal = REAL;
END_TYPE;

EXPRESS-G diagram

`

Link to this page