[-inf,b) ( b -- interval )
Factor handbook » The language » Numbers » Intervals » Creating intervals

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Vocabulary
math.intervals

Inputs

b

a real

Outputs

interval

an interval

Word description
Creates a new interval containing all real numbers less than b, together with negative infinity.

Definition

USING: kernel ;

IN: math.intervals

: [-inf,b) ( b -- interval ) -1/0. swap [a,b) ; inline