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Add the limiting distributions to generalized Pareto distribution with shapes c=0 and c=-1 #3225

Merged
merged 5 commits into from Sep 9, 2014
Merged

Add the limiting distributions to generalized Pareto distribution with shapes c=0 and c=-1 #3225

merged 5 commits into from Sep 9, 2014

Commits on Jul 23, 2014

  1. ENH: add the limit shape c=0 to genpareto distribution 

    For c=0, genpareto is equivalent to the exponential
distribution.
    @ev-br
    ev-br committed Jul 23, 2014
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  2. BUG: use special.log1p instead of np.log1p 

    np.log1p(np.inf) is reported to produce nans on some platforms,
see numpy issue scipygh-4225
    @ev-br
    ev-br committed Jul 23, 2014
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  3. BUG: use scipy.special.expm1 instead of np.expm1

    @ev-br
    ev-br committed Jul 23, 2014
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  4. ENH: vectorize genpareto._munp 

    implementation is by @pbrod
    @ev-br
    ev-br committed Jul 23, 2014
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  5. BUG: special-case genpareto(c=-1)

    @ev-br
    ev-br committed Jul 23, 2014
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