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htc: implement HtclowDriver

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Michael Scire 2021-02-09 07:27:17 -08:00 • committed by SciresM
parent 1963ae7ec0
commit 4cb6c63516
6 changed files with 267 additions and 3 deletions
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72
libraries/libvapours/include/vapours/util/util_int_util.hpp Normal file
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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
namespace ams::util {
namespace impl {
template<std::signed_integral To, std::signed_integral From>
constexpr ALWAYS_INLINE bool IsIntValueRepresentableImpl(From v) {
using ToLimit = std::numeric_limits<To>;
using FromLimit = std::numeric_limits<From>;
if constexpr (ToLimit::min() <= FromLimit::min() && FromLimit::max() <= ToLimit::max()) {
return true;
} else {
return ToLimit::min() <= v && v <= ToLimit::max();
}
}
template<std::unsigned_integral To, std::unsigned_integral From>
constexpr ALWAYS_INLINE bool IsIntValueRepresentableImpl(From v) {
using ToLimit = std::numeric_limits<To>;
using FromLimit = std::numeric_limits<From>;
if constexpr (ToLimit::min() <= FromLimit::min() && FromLimit::max() <= ToLimit::max()) {
return true;
} else {
return ToLimit::min() <= v && v <= ToLimit::max();
}
}
template<std::unsigned_integral To, std::signed_integral From>
constexpr ALWAYS_INLINE bool IsIntValueRepresentableImpl(From v) {
using UnsignedFrom = typename std::make_unsigned<From>::type;
if (v < 0) {
return false;
} else {
return IsIntValueRepresentableImpl<To, UnsignedFrom>(static_cast<UnsignedFrom>(v));
}
}
template<std::signed_integral To, std::unsigned_integral From>
constexpr ALWAYS_INLINE bool IsIntValueRepresentableImpl(From v) {
using UnsignedTo = typename std::make_unsigned<To>::type;
return v <= static_cast<UnsignedTo>(std::numeric_limits<To>::max());
}
}
template<std::integral To, std::integral From>
constexpr ALWAYS_INLINE bool IsIntValueRepresentable(From v) {
return ::ams::util::impl::IsIntValueRepresentableImpl<To, From>(v);
}
}