cum-sum ( seq -- seq' )
Statistics » Computing cumulative sequences

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cum-sum0 ( seq -- seq' )

Vocabulary
math.statistics

Inputs

seq	a sequence

Outputs

seq'	a sequence

Word description
Returns the cumulative sum of seq.

Examples

USING: math.statistics prettyprint ; { 1 -1 2 -1 4 } cum-sum .
{ 1 0 2 1 5 }

Definition

USING: math sequences ;

IN: math.statistics

: cum-sum ( seq -- seq' ) 0 [ + ] accumulate* ;