Numeric and Boolean values

Integer numbers shall be represented in a manner consistent with the specification for integers in XML Schema Datatypes. This International Standard shall explicitly indicate where an integer value is mandatory.

Real numbers shall be represented in a manner consistent with the specification for double-precision numbers in XML Schema Datatypes. This representation allows for integer, decimal and exponential notations. A real value is allowed in all numeric fields defined by this International Standard unless the value is explicitly restricted to integer.

Positive, negative and zero values are allowed unless explicitly restricted.

Boolean values shall be represented in a manner consistent with the specification for Boolean in XML Schema Datatypes.The values "0" and "false" are equivalent. The values "1" and "true" are equivalent. Absence of an optional value is equivalent to logical false. This International Standard shall explicitly indicate where a Boolean value is mandatory.