chromium/third_party/eigen3/src/unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsFunctors.h

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2016 Eugene Brevdo <[email protected]>
// Copyright (C) 2016 Gael Guennebaud <[email protected]>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.

#ifndef EIGEN_SPECIALFUNCTIONS_FUNCTORS_H
#define EIGEN_SPECIALFUNCTIONS_FUNCTORS_H

// IWYU pragma: private
#include "./InternalHeaderCheck.h"

namespace Eigen {

namespace internal {

/** \internal
 * \brief Template functor to compute the incomplete gamma function igamma(a, x)
 *
 * \sa class CwiseBinaryOp, Cwise::igamma
 */
template <typename Scalar>
struct scalar_igamma_op : binary_op_base<Scalar, Scalar> { … };
functor_traits<scalar_igamma_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the derivative of the incomplete gamma
 * function igamma_der_a(a, x)
 *
 * \sa class CwiseBinaryOp, Cwise::igamma_der_a
 */
template <typename Scalar>
struct scalar_igamma_der_a_op { … };
functor_traits<scalar_igamma_der_a_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the derivative of the sample
 * of a Gamma(alpha, 1) random variable with respect to the parameter alpha
 * gamma_sample_der_alpha(alpha, sample)
 *
 * \sa class CwiseBinaryOp, Cwise::gamma_sample_der_alpha
 */
template <typename Scalar>
struct scalar_gamma_sample_der_alpha_op { … };
functor_traits<scalar_gamma_sample_der_alpha_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the complementary incomplete gamma function igammac(a, x)
 *
 * \sa class CwiseBinaryOp, Cwise::igammac
 */
template <typename Scalar>
struct scalar_igammac_op : binary_op_base<Scalar, Scalar> { … };
functor_traits<scalar_igammac_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the incomplete beta integral betainc(a, b, x)
 *
 */
template <typename Scalar>
struct scalar_betainc_op { … };
functor_traits<scalar_betainc_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the natural log of the absolute
 * value of Gamma of a scalar
 * \sa class CwiseUnaryOp, Cwise::lgamma()
 */
template <typename Scalar>
struct scalar_lgamma_op { … };
functor_traits<scalar_lgamma_op<Scalar>>;

/** \internal
 * \brief Template functor to compute psi, the derivative of lgamma of a scalar.
 * \sa class CwiseUnaryOp, Cwise::digamma()
 */
template <typename Scalar>
struct scalar_digamma_op { … };
functor_traits<scalar_digamma_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the Riemann Zeta function of two arguments.
 * \sa class CwiseUnaryOp, Cwise::zeta()
 */
template <typename Scalar>
struct scalar_zeta_op { … };
functor_traits<scalar_zeta_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the polygamma function.
 * \sa class CwiseUnaryOp, Cwise::polygamma()
 */
template <typename Scalar>
struct scalar_polygamma_op { … };
functor_traits<scalar_polygamma_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the error function of a scalar
 * \sa class CwiseUnaryOp, ArrayBase::erf()
 */
template <typename Scalar>
struct scalar_erf_op { … };
functor_traits<scalar_erf_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the Complementary Error Function
 * of a scalar
 * \sa class CwiseUnaryOp, Cwise::erfc()
 */
template <typename Scalar>
struct scalar_erfc_op { … };
functor_traits<scalar_erfc_op<Scalar>>;

/** \internal
 * \brief Template functor to compute the Inverse of the normal distribution
 * function of a scalar
 * \sa class CwiseUnaryOp, Cwise::ndtri()
 */
template <typename Scalar>
struct scalar_ndtri_op { … };
functor_traits<scalar_ndtri_op<Scalar>>;

}  // end namespace internal

}  // end namespace Eigen

#endif  // EIGEN_SPECIALFUNCTIONS_FUNCTORS_H