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Diffstat (limited to 'third_party/eigen3/Eigen/src/Core/GlobalFunctions.h')
-rw-r--r-- | third_party/eigen3/Eigen/src/Core/GlobalFunctions.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/third_party/eigen3/Eigen/src/Core/GlobalFunctions.h b/third_party/eigen3/Eigen/src/Core/GlobalFunctions.h new file mode 100644 index 0000000000..0b1ce46ba2 --- /dev/null +++ b/third_party/eigen3/Eigen/src/Core/GlobalFunctions.h @@ -0,0 +1,94 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2010-2012 Gael Guennebaud <gael.guennebaud@inria.fr> +// Copyright (C) 2010 Benoit Jacob <jacob.benoit.1@gmail.com> +// +// 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_GLOBAL_FUNCTIONS_H +#define EIGEN_GLOBAL_FUNCTIONS_H + +#define EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(NAME,FUNCTOR) \ + template<typename Derived> \ + inline const Eigen::CwiseUnaryOp<Eigen::internal::FUNCTOR<typename Derived::Scalar>, const Derived> \ + NAME(const Eigen::ArrayBase<Derived>& x) { \ + return x.derived(); \ + } + +#define EIGEN_ARRAY_DECLARE_GLOBAL_EIGEN_UNARY(NAME,FUNCTOR) \ + \ + template<typename Derived> \ + struct NAME##_retval<ArrayBase<Derived> > \ + { \ + typedef const Eigen::CwiseUnaryOp<Eigen::internal::FUNCTOR<typename Derived::Scalar>, const Derived> type; \ + }; \ + template<typename Derived> \ + struct NAME##_impl<ArrayBase<Derived> > \ + { \ + static inline typename NAME##_retval<ArrayBase<Derived> >::type run(const Eigen::ArrayBase<Derived>& x) \ + { \ + return x.derived(); \ + } \ + }; + + +namespace Eigen +{ + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(real,scalar_real_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(imag,scalar_imag_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(conj,scalar_conjugate_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(sin,scalar_sin_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(cos,scalar_cos_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(asin,scalar_asin_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(acos,scalar_acos_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(tan,scalar_tan_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(atan,scalar_atan_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(tanh,scalar_tanh_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(exp,scalar_exp_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(log,scalar_log_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(abs,scalar_abs_op) + EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(sqrt,scalar_sqrt_op) + + template<typename Derived> + inline const Eigen::CwiseUnaryOp<Eigen::internal::scalar_pow_op<typename Derived::Scalar>, const Derived> + pow(const Eigen::ArrayBase<Derived>& x, const typename Derived::Scalar& exponent) { + return x.derived().pow(exponent); + } + + template<typename Derived> + inline const Eigen::CwiseBinaryOp<Eigen::internal::scalar_binary_pow_op<typename Derived::Scalar, typename Derived::Scalar>, const Derived, const Derived> + pow(const Eigen::ArrayBase<Derived>& x, const Eigen::ArrayBase<Derived>& exponents) + { + return Eigen::CwiseBinaryOp<Eigen::internal::scalar_binary_pow_op<typename Derived::Scalar, typename Derived::Scalar>, const Derived, const Derived>( + x.derived(), + exponents.derived() + ); + } + + /** + * \brief Component-wise division of a scalar by array elements. + **/ + template <typename Derived> + inline const Eigen::CwiseUnaryOp<Eigen::internal::scalar_inverse_mult_op<typename Derived::Scalar>, const Derived> + operator/(const typename Derived::Scalar& s, const Eigen::ArrayBase<Derived>& a) + { + return Eigen::CwiseUnaryOp<Eigen::internal::scalar_inverse_mult_op<typename Derived::Scalar>, const Derived>( + a.derived(), + Eigen::internal::scalar_inverse_mult_op<typename Derived::Scalar>(s) + ); + } + + namespace internal + { + EIGEN_ARRAY_DECLARE_GLOBAL_EIGEN_UNARY(real,scalar_real_op) + EIGEN_ARRAY_DECLARE_GLOBAL_EIGEN_UNARY(imag,scalar_imag_op) + EIGEN_ARRAY_DECLARE_GLOBAL_EIGEN_UNARY(abs2,scalar_abs2_op) + } +} + +// TODO: cleanly disable those functions that are not supported on Array (numext::real_ref, internal::random, internal::isApprox...) + +#endif // EIGEN_GLOBAL_FUNCTIONS_H |