sumOfProducts

sumOfProducts(a, b, c, d): number

Defined in: diff-of-products.ts:67

a * b + c * d, accurate to within 1.5 units in the last place of the true result however badly the two products cancel.

The companion of diffOfProducts, for the sum form — a two-term dot product, the imaginary part of a complex product. See that function for when this is worth its cost.

Parameters

a

number

First factor of the first product.

b

number

Second factor of the first product.

c

number

First factor of the second product.

d

number

Second factor of the second product.

Returns

number

a * b + c * d.