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Eigen  3.4.0
 
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arch/GPU/MathFunctions.h
1// This file is part of Eigen, a lightweight C++ template library
2// for linear algebra.
3//
4// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
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 EIGEN_MATH_FUNCTIONS_GPU_H
11#define EIGEN_MATH_FUNCTIONS_GPU_H
12
13namespace Eigen {
14
15namespace internal {
16
17// Make sure this is only available when targeting a GPU: we don't want to
18// introduce conflicts between these packet_traits definitions and the ones
19// we'll use on the host side (SSE, AVX, ...)
20#if defined(EIGEN_GPUCC) && defined(EIGEN_USE_GPU)
21template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
22float4 plog<float4>(const float4& a)
23{
24 return make_float4(logf(a.x), logf(a.y), logf(a.z), logf(a.w));
25}
26
27template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
28double2 plog<double2>(const double2& a)
29{
30 using ::log;
31 return make_double2(log(a.x), log(a.y));
32}
33
34template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
35float4 plog1p<float4>(const float4& a)
36{
37 return make_float4(log1pf(a.x), log1pf(a.y), log1pf(a.z), log1pf(a.w));
38}
39
40template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
41double2 plog1p<double2>(const double2& a)
42{
43 return make_double2(log1p(a.x), log1p(a.y));
44}
45
46template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
47float4 pexp<float4>(const float4& a)
48{
49 return make_float4(expf(a.x), expf(a.y), expf(a.z), expf(a.w));
50}
51
52template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
53double2 pexp<double2>(const double2& a)
54{
55 using ::exp;
56 return make_double2(exp(a.x), exp(a.y));
57}
58
59template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
60float4 pexpm1<float4>(const float4& a)
61{
62 return make_float4(expm1f(a.x), expm1f(a.y), expm1f(a.z), expm1f(a.w));
63}
64
65template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
66double2 pexpm1<double2>(const double2& a)
67{
68 return make_double2(expm1(a.x), expm1(a.y));
69}
70
71template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
72float4 psqrt<float4>(const float4& a)
73{
74 return make_float4(sqrtf(a.x), sqrtf(a.y), sqrtf(a.z), sqrtf(a.w));
75}
76
77template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
78double2 psqrt<double2>(const double2& a)
79{
80 using ::sqrt;
81 return make_double2(sqrt(a.x), sqrt(a.y));
82}
83
84template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
85float4 prsqrt<float4>(const float4& a)
86{
87 return make_float4(rsqrtf(a.x), rsqrtf(a.y), rsqrtf(a.z), rsqrtf(a.w));
88}
89
90template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
91double2 prsqrt<double2>(const double2& a)
92{
93 return make_double2(rsqrt(a.x), rsqrt(a.y));
94}
95
96
97#endif
98
99} // end namespace internal
100
101} // end namespace Eigen
102
103#endif // EIGEN_MATH_FUNCTIONS_GPU_H
Namespace containing all symbols from the Eigen library.
Definition: Core:141
const Eigen::CwiseUnaryOp< Eigen::internal::scalar_rsqrt_op< typename Derived::Scalar >, const Derived > rsqrt(const Eigen::ArrayBase< Derived > &x)