/usr/include/thrust/detail/integer_traits.h is in libthrust-dev 1.6.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright 2008-2012 NVIDIA Corporation
*
* 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/detail/config.h>
#include <limits>
#include <limits.h>
namespace thrust
{
namespace detail
{
template<typename T>
class integer_traits
{
public:
static const bool is_integral = false;
};
template<typename T, T min_val, T max_val>
class integer_traits_base
{
public:
static const bool is_integral = true;
static const T const_min = min_val;
static const T const_max = max_val;
};
template<>
class integer_traits<bool>
: public std::numeric_limits<bool>,
public integer_traits_base<bool, false, true>
{};
template<>
class integer_traits<char>
: public std::numeric_limits<char>,
public integer_traits_base<char, CHAR_MIN, CHAR_MAX>
{};
template<>
class integer_traits<signed char>
: public std::numeric_limits<signed char>,
public integer_traits_base<signed char, SCHAR_MIN, SCHAR_MAX>
{};
template<>
class integer_traits<unsigned char>
: public std::numeric_limits<unsigned char>,
public integer_traits_base<unsigned char, 0, UCHAR_MAX>
{};
template<>
class integer_traits<short>
: public std::numeric_limits<short>,
public integer_traits_base<short, SHRT_MIN, SHRT_MAX>
{};
template<>
class integer_traits<unsigned short>
: public std::numeric_limits<unsigned short>,
public integer_traits_base<unsigned short, 0, USHRT_MAX>
{};
template<>
class integer_traits<int>
: public std::numeric_limits<int>,
public integer_traits_base<int, INT_MIN, INT_MAX>
{};
template<>
class integer_traits<unsigned int>
: public std::numeric_limits<unsigned int>,
public integer_traits_base<unsigned int, 0, UINT_MAX>
{};
template<>
class integer_traits<long>
: public std::numeric_limits<long>,
public integer_traits_base<long, LONG_MIN, LONG_MAX>
{};
template<>
class integer_traits<unsigned long>
: public std::numeric_limits<unsigned long>,
public integer_traits_base<unsigned long, 0, ULONG_MAX>
{};
template<>
class integer_traits<long long>
: public std::numeric_limits<long long>,
public integer_traits_base<long long, LLONG_MIN, LLONG_MAX>
{};
template<>
class integer_traits<unsigned long long>
: public std::numeric_limits<unsigned long long>,
public integer_traits_base<unsigned long long, 0, ULLONG_MAX>
{};
} // end detail
} // end thrust
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