#### IfcBooleanChoose

##### Semantic definitions at the function

Function Definition

Function Semantic Definition Definition from ISO/CD 10303-42:1992: This function returns one of two choices depending on the value of a Boolean input argument. The two choices are also input arguments. NOTE Corresponding STEP function boolean_choose. Please refer to ISO/IS 10303-42:1994, p. 158 for the final definition of the formal standard. HISTORY New function in IFC Release 2.0.

##### Formal representations

EXPRESS Specification

FUNCTION IfcBooleanChoose
(B : BOOLEAN ;
Choice1, Choice2 : Generic : Item) : Generic : Item;
IF B THEN
RETURN (Choice1);
ELSE
RETURN (Choice2);
END_IF;
END_FUNCTION;

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