#### 8.5.2.4 IfcReal

IfcReal is a defined type of simple data type REAL. It is required since a select type (IfcSimpleValue), cannot directly include 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 IFC1.5.1.

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;

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