nfftls is a program for fast computing Lomb-Scargle periodograms. The present archive contains an example of C implementation of the code described in B. Leroy, "Fast calculation of the Lomb-Scargle periodogram using nonequispaced fast Fourier t

nfftls is a program for fast computing Lomb-Scargle periodograms. The present archive contains an example of C implementation of the code described in B. Leroy, "Fast calculation of the Lomb-Scargle periodogram using nonequispa