Syntax:

    #include <numeric>
    TYPE inner_product( iterator start1, iterator end1, iterator start2, TYPE val );
    TYPE inner_product( iterator start1, iterator end1, iterator start2, TYPE val, BinaryFunction f1, BinaryFunction f2 );

The inner_product() function computes the inner product of [start1,end1) and a range of the same size starting at start2.

inner_product() runs in linear time.

Related Topics: accumulate, adjacent_difference, count, partial_sum