sum-product

• Usage • Test • License •

Simple and small standalone function to calculate the sum of the product of array items.
sumProduct([0,1], [2,3], [4,5]) // 024 + 135 = 15

Uses a modified Kahan sum to reduce floating point errors.

Usage

The function takes any number of arrays.

``javascript
var sumProduct = require('sum-product')
var result = sumProduct([0,1], [2,3], [4,5]) // 024 + 135 = 15
result = sumProduct() // ==>0
result = sumProduct([]) // ==>0
result = sumProduct([a]) // ==>NaN
``

License

Released under the MIT License