t_2PN()
t_0PN()
f_0PN()
FISCO()
Header file for all PN-waveform-specific utilities
Functions
Time t as a function of f up to 2nd PN order.
Taken from https://arxiv.org/pdf/gr-qc/0411129.pdf
Non-precessing for now
Inverse of f_0PN.
utility to get frequency from time before merger
See https://arxiv.org/pdf/1902.00021.pdf
Utility function for the frequency at the innermost stable circular orbit (ISCO)