/usr/include/thrust/detail/complex/cpow.h is in libthrust-dev 1.8.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | /*
* Copyright 2008-2013 NVIDIA Corporation
* Copyright 2013 Filipe RNC Maia
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <thrust/complex.h>
#include <thrust/detail/type_traits.h>
namespace thrust{
template <typename T>
__host__ __device__
inline complex<T> pow(const complex<T>& z, const complex<T> & exponent){
return thrust::exp(thrust::log(z)*exponent);
}
/* This function should be changed as soon as FreeBSD's msun gets a cpow function */
template <>
__host__ __device__
inline complex<double> pow(const complex<double>& z, const complex<double> & exponent){
return thrust::exp(thrust::log(z)*exponent);
}
template <typename T>
__host__ __device__
inline complex<T> pow(const complex<T>& z, const T & exponent){
return thrust::exp(thrust::log(z)*exponent);
}
template <typename T>
__host__ __device__
inline complex<T> pow(const T & x, const complex<T> & exponent){
return thrust::exp(std::log(x)*exponent);
}
#if !defined _MSC_VER
template <typename T, typename U>
__host__ __device__
inline complex<typename detail::promoted_numerical_type<T,U>::type > pow(const complex<T>& z, const complex<T>& exponent){
typedef typename detail::promoted_numerical_type<T,U>::type PromotedType;
return thrust::exp(thrust::log(complex<PromotedType>(z))*complex<PromotedType>(exponent));
}
template <typename T, typename U>
__host__ __device__
inline complex<typename detail::promoted_numerical_type<T,U>::type > pow(const complex<T>& z, const U& exponent){
typedef typename detail::promoted_numerical_type<T,U>::type PromotedType;
return thrust::exp(thrust::log(complex<PromotedType>(z))*PromotedType(exponent));
}
template <typename T, typename U>
__host__ __device__
inline complex<typename detail::promoted_numerical_type<T,U>::type > pow(const T& x, const complex<U>& exponent){
typedef typename detail::promoted_numerical_type<T,U>::type PromotedType;
return thrust::exp(std::log(PromotedType(x))*complex<PromotedType>(exponent));
}
#endif
}
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