interval-neg ( i1 -- i2 )
Factor handbook » The language » Numbers » Intervals » Interval arithmetic

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Vocabulary
math.intervals

Inputs

i1	an interval

Outputs

i2	an interval

Word description
Negates an interval.

Examples

USING: math.intervals prettyprint ; 10 11 [a,b] interval-neg .
T{ interval { from { -11 t } } { to { -10 t } } }

Definition

IN: math.intervals

: interval-neg ( i1 -- i2 ) -1 [a,a] interval* ;