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exboost

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Provides an elixir wrapper for the C++ Boost library.

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exboost lib Exboost.ex
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lib/Exboost.ex 

defmodule Exboost.Math do

  # Boost Software License - Version 1.0 - August 17th, 2003

  #

  # Permission is hereby granted, free of charge, to any person or organization

  # obtaining a copy of the software and accompanying documentation covered by

  # this license (the "Software") to use, reproduce, display, distribute,

  # execute, and transmit the Software, and to prepare derivative works of the

  # Software, and to permit third-parties to whom the Software is furnished to

  # do so, all subject to the following:

  #

  # The copyright notices in the Software and this entire statement, including

  # the above license grant, this restriction and the following disclaimer,

  # must be included in all copies of the Software, in whole or in part, and

  # all derivative works of the Software, unless such copies or derivative

  # works are solely in the form of machine-executable object code generated by

  # a source language processor.

  #

  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  # FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT

  # SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE

  # FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,

  # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

  # DEALINGS IN THE SOFTWARE.



  @on_load :init



  app = Mix.Project.config[:app]

  

  def init() do

    path = :filename.join(:code.priv_dir(unquote(app)), 'libboostnif')

    :ok = :erlang.load_nif(path, 0)

  end



  @doc """

  Provides the regularized lower incomplete gamma function.

  

  ## Examples



      iex> Exboost.Math.gamma_p(0.234,2.3)

      0.9891753004794075



      iex> Exboost.Math.gamma_p(5.0,0.0)

      0.0



  """

  def gamma_p(a,z), do: _gamma_p(a,z)

  def _gamma_p(_a,_z), do: "NIF library not loaded"



end