interval-subset? ( i1 i2 -- ? )
Factor handbook » The language » Numbers » Intervals » Set-theoretic operations on intervals

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Vocabulary
math.intervals

Inputs

i1	an interval
i2	an interval

Outputs

?

a boolean

Word description
Tests if every point of i1 is contained in i2.

Examples

USING: math.intervals prettyprint ; 2 4 [a,b] 1 9 [a,b] interval-subset? .
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See also
interval-contains?

Definition

USING: kernel ;

IN: math.intervals

: interval-subset? ( i1 i2 -- ? ) dupd interval-intersect = ;