eigen/unsupported/Eigen/src/SpecialFunctions/BesselFunctionsPacketMath.h

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2016 Gael Guennebaud <gael.guennebaud@inria.fr>
//
// 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_BESSELFUNCTIONS_PACKETMATH_H
#define EIGEN_BESSELFUNCTIONS_PACKETMATH_H

namespace Eigen {

namespace internal {

/** \internal \returns the exponentially scaled modified Bessel function of
 * order zero i0(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_i0(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_i0; return generic_i0<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order zero i0e(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_i0e(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_i0e; return generic_i0e<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order one i1(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_i1(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_i1; return generic_i1<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order one i1e(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_i1e(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_i1e; return generic_i1e<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order zero j0(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_j0(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_j0; return generic_j0<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order zero j1(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_j1(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_j1; return generic_j1<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order one y0(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_y0(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_y0; return generic_y0<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order one y1(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_y1(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_y1; return generic_y1<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order zero k0(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_k0(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_k0; return generic_k0<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order zero k0e(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_k0e(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_k0e; return generic_k0e<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order one k1e(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_k1(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_k1; return generic_k1<Packet, ScalarType>::run(x);
}

/** \internal \returns the exponentially scaled modified Bessel function of
 * order one k1e(\a a) (coeff-wise) */
template <typename Packet>
EIGEN_DEVICE_FUNC EIGEN_DECLARE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS
Packet pbessel_k1e(const Packet& x) {
  typedef typename unpacket_traits<Packet>::type ScalarType;
  using internal::generic_k1e; return generic_k1e<Packet, ScalarType>::run(x);
}

} // end namespace internal

} // end namespace Eigen

#endif // EIGEN_BESSELFUNCTIONS_PACKETMATH_H