FMM utilities

Files
file	fmm_assembly_times.hpp
	Implementation of class NiHu::fmm:fmm_assembly_times.
file	fmm_timer.cpp
	Implementation of the class NiHu::fmm::fmm_timer.
file	fmm_timer.h
	Interface of the class NiHu::fmm::fmm_timer.
file	hat_matrix.h
	Implementation of class NiHu::fmm::hat_matrix.
file	kron_identity.hpp
	Kronecker product of a matrix by an Identity matrix.
file	m2l_indices.hpp
	Implementation of class template Nihu::fmm::m2l_indices.
file	spectral_interpolate.cpp
	Implementation of spectral interpolation using FFT/IFFT.
file	spectral_interpolate.h
	Interface of class NiHu::fmm::spectral_interpolate.

Detailed Description