Natural language names
Semantic definitions at the type
Type definition

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

Link to EXPRESS-G diagram EXPRESS-G diagram

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