MATERNEDGE is the jMatern module of jLab.

 MATERNEDGE  Long-time cutoff edge for the Matern impulse response function.
    TE=MATERNEDGE(ALPHA,H,EPSILON) determines a long-time cutoff for the
    Green's function of a Matern process characterized by slope parameter 
    ALPHA and range parameter H.
    TE is the (approximately) the first time at which the ratio of the 
    time-integrated magnitude of the Green's function, to the value it 
    obtains at infinity, has risen to within EPSILON of unity.
    TE is approximate because of discretization of time.  It will always be
    greater than the actual time at which the EPSILON level is reached.  
    See Lilly et al. (2017) for details. 
    MATERNEDGE is a low-level function that is called by MATERNOISE.
    'maternedge --t' runs some tests.
    Usage: te=maternedge(alpha,h,epsilon);
    This is part of JLAB --- type 'help jlab' for more information
    (C) 2013--2017 J.M. Lilly --- type 'help jlab_license' for details

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