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Diffstat (limited to 'Eigen/src/Core/arch/Default/GenericPacketMathFunctionsFwd.h')
| -rw-r--r-- | Eigen/src/Core/arch/Default/GenericPacketMathFunctionsFwd.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/Eigen/src/Core/arch/Default/GenericPacketMathFunctionsFwd.h b/Eigen/src/Core/arch/Default/GenericPacketMathFunctionsFwd.h new file mode 100644 index 000000000..177a04e93 --- /dev/null +++ b/Eigen/src/Core/arch/Default/GenericPacketMathFunctionsFwd.h @@ -0,0 +1,110 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2019 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_ARCH_GENERIC_PACKET_MATH_FUNCTIONS_FWD_H +#define EIGEN_ARCH_GENERIC_PACKET_MATH_FUNCTIONS_FWD_H + +namespace Eigen { +namespace internal { + +// Forward declarations of the generic math functions +// implemented in GenericPacketMathFunctions.h +// This is needed to workaround a circular dependency. + +/*************************************************************************** + * Some generic implementations to be used by implementors +***************************************************************************/ + +/** Default implementation of pfrexp. + * It is expected to be called by implementers of template<> pfrexp. + */ +template<typename Packet> EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC +Packet pfrexp_generic(const Packet& a, Packet& exponent); + +// Extracts the biased exponent value from Packet p, and casts the results to +// a floating-point Packet type. Used by pfrexp_generic. Override this if +// there is no unpacket_traits<Packet>::integer_packet. +template<typename Packet> EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC +Packet pfrexp_generic_get_biased_exponent(const Packet& p); + +/** Default implementation of pldexp. + * It is expected to be called by implementers of template<> pldexp. + */ +template<typename Packet> EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC +Packet pldexp_generic(const Packet& a, const Packet& exponent); + +/** \internal \returns log(x) for single precision float */ +template <typename Packet> +EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS +EIGEN_UNUSED +Packet plog_float(const Packet _x); + +/** \internal \returns log2(x) for single precision float */ +template <typename Packet> +EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS +EIGEN_UNUSED +Packet plog2_float(const Packet _x); + +/** \internal \returns log(x) for single precision float */ +template <typename Packet> +EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS +EIGEN_UNUSED +Packet plog_double(const Packet _x); + +/** \internal \returns log2(x) for single precision float */ +template <typename Packet> +EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS +EIGEN_UNUSED +Packet plog2_double(const Packet _x); + +/** \internal \returns log(1 + x) */ +template<typename Packet> +Packet generic_plog1p(const Packet& x); + +/** \internal \returns exp(x)-1 */ +template<typename Packet> +Packet generic_expm1(const Packet& x); + +/** \internal \returns exp(x) for single precision float */ +template <typename Packet> +EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS +EIGEN_UNUSED +Packet pexp_float(const Packet _x); + +/** \internal \returns exp(x) for double precision real numbers */ +template <typename Packet> +EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS +EIGEN_UNUSED +Packet pexp_double(const Packet _x); + +/** \internal \returns sin(x) for single precision float */ +template<typename Packet> +EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS +EIGEN_UNUSED +Packet psin_float(const Packet& x); + +/** \internal \returns cos(x) for single precision float */ +template<typename Packet> +EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS +EIGEN_UNUSED +Packet pcos_float(const Packet& x); + +/** \internal \returns sqrt(x) for complex types */ +template<typename Packet> +EIGEN_DEFINE_FUNCTION_ALLOWING_MULTIPLE_DEFINITIONS +EIGEN_UNUSED +Packet psqrt_complex(const Packet& a); + +template <typename Packet, int N> struct ppolevl; + + +} // end namespace internal +} // end namespace Eigen + +#endif // EIGEN_ARCH_GENERIC_PACKET_MATH_FUNCTIONS_FWD_H |