open branch for 2d-periodic P2NFFT
remove deprecated files from Makefile.am
remove deprecated macros
* fix scaling for cubic 2dp P2NFFT
some work on 2dp-P2NFFT
2dp-P2NFFT starts to work
2dp-P2NFFT: serial code works for non-cubic boxes
2d-P2NFFT: remove debug line, add new test case
setter for far field regularization border epsB
2dp-P2NFFT: set default epsB=p/N
added 1d-/2d-periodic references for cloud_wall and silica_melt
fix evaluation of theta_1 for large xwq
set epsN=p/n instead of p/N
Bugfix: tune epsB after p and n
start implementation of incomplete Bessel-K function
incomplete Bessel-K finished but doesn't work
inc_bessel_k nealry finished, bessel_K missing
implemented incomplete bessel_k fct, needs some tests
bessel_k works and is fast
implement kernels for 1dp-P2NFFT