17c804472Sopenharmony_ci/* 27c804472Sopenharmony_ci * Copyright (c) 2023 Huawei Device Co., Ltd. 37c804472Sopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License"); 47c804472Sopenharmony_ci * you may not use this file except in compliance with the License. 57c804472Sopenharmony_ci * You may obtain a copy of the License at 67c804472Sopenharmony_ci * 77c804472Sopenharmony_ci * http://www.apache.org/licenses/LICENSE-2.0 87c804472Sopenharmony_ci * 97c804472Sopenharmony_ci * Unless required by applicable law or agreed to in writing, software 107c804472Sopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS, 117c804472Sopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 127c804472Sopenharmony_ci * See the License for the specific language governing permissions and 137c804472Sopenharmony_ci * limitations under the License. 147c804472Sopenharmony_ci */ 157c804472Sopenharmony_ci 167c804472Sopenharmony_ci#include "EndianUtil.h" 177c804472Sopenharmony_ci 187c804472Sopenharmony_cibool EndianUtil::IsBigEndian() 197c804472Sopenharmony_ci{ 207c804472Sopenharmony_ci const uint32_t ENDIAN_TEST_MAGIC = 0x01020304; 217c804472Sopenharmony_ci const uint32_t BIG_ENDIAN_FIRST_BYTE = 0x1; 227c804472Sopenharmony_ci union { 237c804472Sopenharmony_ci uint32_t data; 247c804472Sopenharmony_ci char buffer[sizeof(uint32_t)]; 257c804472Sopenharmony_ci } test = {ENDIAN_TEST_MAGIC}; 267c804472Sopenharmony_ci 277c804472Sopenharmony_ci return test.buffer[0] == BIG_ENDIAN_FIRST_BYTE; 287c804472Sopenharmony_ci} 29