An error bound for multidimensional quadrature is derived that include
s the Koksma-Hlawka inequality as a special case. This error bound tak
es the form of a product of two terms. One term, which depends only on
the integrand, is defined as a generalized variation. The other term,
which depends only on the quadrature rule, is defined as a generalize
d discrepancy. The generalized discrepancy is a figure of merit for qu
adrature rules and includes as special cases the L-p-star discrepancy
and P-alpha that arises in the study of lattice rules.