1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2010 Gael Guennebaud <gael.guennebaud (at) inria.fr> 5 // 6 // This Source Code Form is subject to the terms of the Mozilla 7 // Public License v. 2.0. If a copy of the MPL was not distributed 8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 10 #ifndef EIGEN2_MATH_FUNCTIONS_H 11 #define EIGEN2_MATH_FUNCTIONS_H 12 13 namespace Eigen { 14 15 template<typename T> inline typename NumTraits<T>::Real ei_real(const T& x) { return numext::real(x); } 16 template<typename T> inline typename NumTraits<T>::Real ei_imag(const T& x) { return numext::imag(x); } 17 template<typename T> inline T ei_conj(const T& x) { return numext::conj(x); } 18 template<typename T> inline typename NumTraits<T>::Real ei_abs (const T& x) { using std::abs; return abs(x); } 19 template<typename T> inline typename NumTraits<T>::Real ei_abs2(const T& x) { return numext::abs2(x); } 20 template<typename T> inline T ei_sqrt(const T& x) { using std::sqrt; return sqrt(x); } 21 template<typename T> inline T ei_exp (const T& x) { using std::exp; return exp(x); } 22 template<typename T> inline T ei_log (const T& x) { using std::log; return log(x); } 23 template<typename T> inline T ei_sin (const T& x) { using std::sin; return sin(x); } 24 template<typename T> inline T ei_cos (const T& x) { using std::cos; return cos(x); } 25 template<typename T> inline T ei_atan2(const T& x,const T& y) { using std::atan2; return atan2(x,y); } 26 template<typename T> inline T ei_pow (const T& x,const T& y) { return numext::pow(x,y); } 27 template<typename T> inline T ei_random () { return internal::random<T>(); } 28 template<typename T> inline T ei_random (const T& x, const T& y) { return internal::random(x, y); } 29 30 template<typename T> inline T precision () { return NumTraits<T>::dummy_precision(); } 31 template<typename T> inline T machine_epsilon () { return NumTraits<T>::epsilon(); } 32 33 34 template<typename Scalar, typename OtherScalar> 35 inline bool ei_isMuchSmallerThan(const Scalar& x, const OtherScalar& y, 36 typename NumTraits<Scalar>::Real precision = NumTraits<Scalar>::dummy_precision()) 37 { 38 return internal::isMuchSmallerThan(x, y, precision); 39 } 40 41 template<typename Scalar> 42 inline bool ei_isApprox(const Scalar& x, const Scalar& y, 43 typename NumTraits<Scalar>::Real precision = NumTraits<Scalar>::dummy_precision()) 44 { 45 return internal::isApprox(x, y, precision); 46 } 47 48 template<typename Scalar> 49 inline bool ei_isApproxOrLessThan(const Scalar& x, const Scalar& y, 50 typename NumTraits<Scalar>::Real precision = NumTraits<Scalar>::dummy_precision()) 51 { 52 return internal::isApproxOrLessThan(x, y, precision); 53 } 54 55 } // end namespace Eigen 56 57 #endif // EIGEN2_MATH_FUNCTIONS_H 58
