You can use floor() in OCL expressions when you need an Integer from a numeric value by taking the integer part of a Real value.

Syntax

number.floor()

Return value

floor() is a Number operation with the following signature:

Number::floor() : Integer

It returns:

• The integer part of self when self is a Real.
• self unchanged when self is an Integer.

Examples

The following expression applies floor() to a Real value:

3.7.floor()

The result is 3.

When the input is already an Integer, the operation returns that Integer:

12.floor()

The result is 12.

Choose the appropriate numeric operation

Requirement	Operation to use
Get the integer part of a Number	floor()
Get the nearest integer	round()
Convert a value only when it represents an integer; otherwise receive invalid	toInteger()
Get the integer quotient when dividing two Integers	div

For example, use floor() when you already have a numeric value and need its integer part. Use div when your intent is integer division, because div calculates the quotient of two values rather than operating on one value.

See also

• Documentation:OCL Number Operators
• Documentation:OCLOperators Number::round () : Integer
• Documentation:OCLOperators toInteger () : Integer
• Documentation:OCLOperators Integer::div ( i : Integer ) : Integer
• Documentation:OCLOperators toDecimal