sarkas.utilities.maths.fast_integral_loop

sarkas.utilities.maths.fast_integral_loop(time, integrand)

Numba’d function to compute the following integral with a varying upper limit

\[I(\tau) = \int_0^{\tau} f(t) dt\]

It uses numpy.trapz(). This function is used in the calculation of the transport coefficients.

Parameters

• time (numpy.ndarray) – Domain of integration

• integrand (numpy.ndarray) – Integrand.

Returns

integral (numpy.ndarray) – Integral with increasing upper limit. Shape = (time.len()).