MATLAB code to calculate the ocean wave autocorrelation function (ACF) from the Taylor series and saddle point approximation. Certain models for ocean wave spectra, including the Bretschneider and Pierson-Moskowitz spectra, have spectral densities in the form of the Fréchet, or inverse Weibull, probability density. The ACF of the waves is the Fourier cosine transform of the spectral density. The derivation of the ACF and the use of this code is described in the paper "Ocean wave autocorrelation function", to be submitted to Applied Mathematics and Computation.Files:frechetct.m - main functionfrechetctrs.m - computes ACF using Taylor (residue) seriesfrechetctsp.m - computes ACF using saddle point approximationfrechetctplot.m - script to plot examples of the function

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