diff options
| author |  Gael Guennebaud <g.gael@free.fr> | 2016-08-23 14:39:55 +0200 |
|---|---|---|
| committer | Gael Guennebaud <g.gael@free.fr> | 2016-08-23 14:39:55 +0200 |
| commit | ef3de20481d4a5f6150255ebdeb4a2d7604b5848 (patch) | |
| tree | ae9fbfc40984c69462832bcf89eccbce6cf9df7a /Eigen/src/Core/functors/UnaryFunctors.h | |
| parent | b3151bca40cb6056ef48511d69c2f30eb56d097d (diff) | |
Cleanup cost of tanh
Diffstat (limited to 'Eigen/src/Core/functors/UnaryFunctors.h')
| -rw-r--r-- | Eigen/src/Core/functors/UnaryFunctors.h | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/Eigen/src/Core/functors/UnaryFunctors.h b/Eigen/src/Core/functors/UnaryFunctors.h index 2a57a5fd9..59b9edf69 100644 --- a/Eigen/src/Core/functors/UnaryFunctors.h +++ b/Eigen/src/Core/functors/UnaryFunctors.h @@ -1,7 +1,7 @@ // This file is part of Eigen, a lightweight C++ template library // for linear algebra. // -// Copyright (C) 2008-2010 Gael Guennebaud <gael.guennebaud@inria.fr> +// Copyright (C) 2008-2016 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 @@ -507,21 +507,18 @@ template <typename Scalar> struct functor_traits<scalar_tanh_op<Scalar> > { enum { PacketAccess = packet_traits<Scalar>::HasTanh, - Cost = (PacketAccess && (!is_same<Scalar, std::complex<float> >::value) && - (!is_same<Scalar, std::complex<double> >::value) + Cost = ( (EIGEN_FAST_MATH && is_same<Scalar,float>::value) // The following numbers are based on the AVX implementation, #ifdef EIGEN_VECTORIZE_FMA // Haswell can issue 2 add/mul/madd per cycle. // 9 pmadd, 2 pmul, 1 div, 2 other ? (2 * NumTraits<Scalar>::AddCost + 6 * NumTraits<Scalar>::MulCost + - NumTraits<Scalar>::template Div< - packet_traits<Scalar>::HasDiv>::Cost) + NumTraits<Scalar>::template Div<packet_traits<Scalar>::HasDiv>::Cost) #else ? (11 * NumTraits<Scalar>::AddCost + 11 * NumTraits<Scalar>::MulCost + - NumTraits<Scalar>::template Div< - packet_traits<Scalar>::HasDiv>::Cost) + NumTraits<Scalar>::template Div<packet_traits<Scalar>::HasDiv>::Cost) #endif // This number assumes a naive implementation of tanh : (6 * NumTraits<Scalar>::AddCost + |