{{alias}}() Returns an accumulator function which incrementally computes a sum of squared absolute values. If provided a value, the accumulator function returns an updated sum. If not provided a value, the accumulator function returns the current sum. If provided `NaN` or a value which, when used in computations, results in `NaN`, the accumulated value is `NaN` for all future invocations. For long running accumulations or accumulations of large numbers, care should be taken to prevent overflow. Returns ------- acc: Function Accumulator function. Examples -------- > var accumulator = {{alias}}(); > var s = accumulator() null > s = accumulator( 2.0 ) 4.0 > s = accumulator( -5.0 ) 29.0 > s = accumulator() 29.0 See Also --------