Atmosphere/libraries/libstratosphere/include/stratosphere/fssystem/dbm/fssystem_dbm_utils.hpp

/*
 * 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.hpp>

namespace ams::fssystem::dbm {

    namespace {

        constexpr inline s32 CountLeadingZeros(u32 val) {
            return util::CountLeadingZeros(val);
        }

        constexpr inline s32 CountLeadingOnes(u32 val) {
            return CountLeadingZeros(~val);
        }

        inline u32 ReadU32(const u8 *buf, size_t index) {
            u32 val;
            std::memcpy(std::addressof(val), buf + index, sizeof(u32));
            return val;
        }

        inline void WriteU32(u8 *buf, size_t index, u32 val) {
            std::memcpy(buf + index, std::addressof(val), sizeof(u32));
        }

    }

}