1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2010-2012 Gael Guennebaud <gael.guennebaud (at) inria.fr> 5 // Copyright (C) 2010 Benoit Jacob <jacob.benoit.1 (at) gmail.com> 6 // 7 // This Source Code Form is subject to the terms of the Mozilla 8 // Public License v. 2.0. If a copy of the MPL was not distributed 9 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 10 11 #ifndef EIGEN_GLOBAL_FUNCTIONS_H 12 #define EIGEN_GLOBAL_FUNCTIONS_H 13 14 #define EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(NAME,FUNCTOR) \ 15 template<typename Derived> \ 16 inline const Eigen::CwiseUnaryOp<Eigen::internal::FUNCTOR<typename Derived::Scalar>, const Derived> \ 17 NAME(const Eigen::ArrayBase<Derived>& x) { \ 18 return x.derived(); \ 19 } 20 21 #define EIGEN_ARRAY_DECLARE_GLOBAL_EIGEN_UNARY(NAME,FUNCTOR) \ 22 \ 23 template<typename Derived> \ 24 struct NAME##_retval<ArrayBase<Derived> > \ 25 { \ 26 typedef const Eigen::CwiseUnaryOp<Eigen::internal::FUNCTOR<typename Derived::Scalar>, const Derived> type; \ 27 }; \ 28 template<typename Derived> \ 29 struct NAME##_impl<ArrayBase<Derived> > \ 30 { \ 31 static inline typename NAME##_retval<ArrayBase<Derived> >::type run(const Eigen::ArrayBase<Derived>& x) \ 32 { \ 33 return x.derived(); \ 34 } \ 35 }; 36 37 38 namespace Eigen 39 { 40 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(real,scalar_real_op) 41 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(imag,scalar_imag_op) 42 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(conj,scalar_conjugate_op) 43 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(sin,scalar_sin_op) 44 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(cos,scalar_cos_op) 45 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(asin,scalar_asin_op) 46 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(acos,scalar_acos_op) 47 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(tan,scalar_tan_op) 48 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(exp,scalar_exp_op) 49 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(log,scalar_log_op) 50 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(abs,scalar_abs_op) 51 EIGEN_ARRAY_DECLARE_GLOBAL_UNARY(sqrt,scalar_sqrt_op) 52 53 template<typename Derived> 54 inline const Eigen::CwiseUnaryOp<Eigen::internal::scalar_pow_op<typename Derived::Scalar>, const Derived> 55 pow(const Eigen::ArrayBase<Derived>& x, const typename Derived::Scalar& exponent) { 56 return x.derived().pow(exponent); 57 } 58 59 template<typename Derived> 60 inline const Eigen::CwiseBinaryOp<Eigen::internal::scalar_binary_pow_op<typename Derived::Scalar, typename Derived::Scalar>, const Derived, const Derived> 61 pow(const Eigen::ArrayBase<Derived>& x, const Eigen::ArrayBase<Derived>& exponents) 62 { 63 return Eigen::CwiseBinaryOp<Eigen::internal::scalar_binary_pow_op<typename Derived::Scalar, typename Derived::Scalar>, const Derived, const Derived>( 64 x.derived(), 65 exponents.derived() 66 ); 67 } 68 69 /** 70 * \brief Component-wise division of a scalar by array elements. 71 **/ 72 template <typename Derived> 73 inline const Eigen::CwiseUnaryOp<Eigen::internal::scalar_inverse_mult_op<typename Derived::Scalar>, const Derived> 74 operator/(const typename Derived::Scalar& s, const Eigen::ArrayBase<Derived>& a) 75 { 76 return Eigen::CwiseUnaryOp<Eigen::internal::scalar_inverse_mult_op<typename Derived::Scalar>, const Derived>( 77 a.derived(), 78 Eigen::internal::scalar_inverse_mult_op<typename Derived::Scalar>(s) 79 ); 80 } 81 82 namespace internal 83 { 84 EIGEN_ARRAY_DECLARE_GLOBAL_EIGEN_UNARY(real,scalar_real_op) 85 EIGEN_ARRAY_DECLARE_GLOBAL_EIGEN_UNARY(imag,scalar_imag_op) 86 EIGEN_ARRAY_DECLARE_GLOBAL_EIGEN_UNARY(abs2,scalar_abs2_op) 87 } 88 } 89 90 // TODO: cleanly disable those functions that are not supported on Array (numext::real_ref, internal::random, internal::isApprox...) 91 92 #endif // EIGEN_GLOBAL_FUNCTIONS_H 93
