SinXOverX.hh

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// -*- mode:c++;tab-width:2;indent-tabs-mode:t;show-trailing-whitespace:t;rm-trailing-spaces:t -*-
// vi: set ts=2 noet:
//
// (c) Copyright Rosetta Commons Member Institutions.
// (c) This file is part of the Rosetta software suite and is made available under license.
// (c) The Rosetta software is developed by the contributing members of the Rosetta Commons.
// (c) For more information, see http://www.rosettacommons.org. Questions about this can be
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/// @file   src/core/scoring/saxs/SAXSEnergyCreatorFA.hh
/// @brief  Declaration for the class that connects SAXSEnergyCreator with the ScoringManager
/// @author Dominik Gront dgront@chem.uw.edu.pl

#ifndef INCLUDED_core_scoring_saxs_SinXOverX_hh
#define INCLUDED_core_scoring_saxs_SinXOverX_hh

#include <core/types.hh>
#include <utility/vector1.hh>


namespace core {
namespace scoring {
namespace saxs {

class SinXOverX {
public:

    static SinXOverX* get_instance() {

  if(!instance_) instance_ = new SinXOverX();
  return instance_;
    }

    core::Real evaluate(core::Real x) const {

  core::Size tmp_i = ((Size) (x * 100) + 1);
  return sin_x_over_x_[tmp_i];
    }

private:
    static SinXOverX* instance_;
    static utility::vector1<Real> sin_x_over_x_;
    SinXOverX();
    void fill_sin_x_over_x_table();
};

}
}
}

#endif