Double-exponential integration helpers

See Units, shapes and model contracts for units, shapes, domains and backend boundaries, and Quickstart for executable minimal examples.

dequad(func, a, b, n[, axis, xp, ...])	Integrate a vectorized function with fixed double-exponential nodes.
generate_x_w(a, b, n[, xp])	Construct nodes and weights for fixed double-exponential quadrature.