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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Types.h>
namespace AK {
template<typename T>
struct NumericLimits {
};
template<>
struct NumericLimits<bool> {
static constexpr char min() { return false; }
static constexpr char max() { return true; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<signed char> {
static constexpr signed char min() { return -__SCHAR_MAX__ - 1; }
static constexpr signed char max() { return __SCHAR_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<char> {
static constexpr char min() { return -__SCHAR_MAX__ - 1; }
static constexpr char max() { return __SCHAR_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<short> {
static constexpr short min() { return -__SHRT_MAX__ - 1; }
static constexpr short max() { return __SHRT_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<int> {
static constexpr int min() { return -__INT_MAX__ - 1; }
static constexpr int max() { return __INT_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<long> {
static constexpr long min() { return -__LONG_MAX__ - 1; }
static constexpr long max() { return __LONG_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<long long> {
static constexpr long long min() { return -__LONG_LONG_MAX__ - 1; }
static constexpr long long max() { return __LONG_LONG_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<unsigned char> {
static constexpr unsigned char min() { return 0; }
static constexpr unsigned char max() { return __SCHAR_MAX__ * 2u + 1; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<unsigned short> {
static constexpr unsigned short min() { return 0; }
static constexpr unsigned short max() { return __SHRT_MAX__ * 2u + 1; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<unsigned> {
static constexpr unsigned min() { return 0; }
static constexpr unsigned max() { return __INT_MAX__ * 2u + 1; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<unsigned long> {
static constexpr unsigned long min() { return 0; }
static constexpr unsigned long max() { return __LONG_MAX__ * 2ul + 1; }
static constexpr bool is_signed() { return false; }
};
template<>
struct NumericLimits<unsigned long long> {
static constexpr unsigned long long min() { return 0; }
static constexpr unsigned long long max() { return __LONG_LONG_MAX__ * 2ull + 1; }
static constexpr bool is_signed() { return false; }
};
#ifndef KERNEL
template<>
struct NumericLimits<float> {
static constexpr float min() { return __FLT_MIN__; }
static constexpr float max() { return __FLT_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<double> {
static constexpr double min() { return __DBL_MIN__; }
static constexpr double max() { return __DBL_MAX__; }
static constexpr bool is_signed() { return true; }
};
template<>
struct NumericLimits<long double> {
static constexpr long double min() { return __LDBL_MIN__; }
static constexpr long double max() { return __LDBL_MAX__; }
static constexpr bool is_signed() { return true; }
};
#endif
}
using AK::NumericLimits;
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