1 /* 2 * Copyright (c) 2020 HiSilicon (Shanghai) Technologies CO., LIMITED. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 * Description: oam log printing interface 15 */ 16 17 #ifndef __WLAN_UTIL_COMMON_H__ 18 #define __WLAN_UTIL_COMMON_H__ 19 20 #include "wlan_util_common_rom.h" 21 22 #ifdef __cplusplus 23 #if __cplusplus 24 extern "C" { 25 #endif 26 #endif 27 28 /* **************************************************************************** 29 函 数 名 : oal_bit_get_num_one_byte 30 功能描述 : 获取单字节中的bit1的个数 31 **************************************************************************** */ oal_bit_get_num_one_byte(osal_u8 byte)32static inline osal_u8 oal_bit_get_num_one_byte(osal_u8 byte) 33 { 34 osal_u8 byte_data = byte; 35 36 byte_data = (byte_data & 0x55) + ((byte_data >> 1) & 0x55); /* 0x55掩码, 1移位数 */ 37 byte_data = (byte_data & 0x33) + ((byte_data >> 2) & 0x33); /* 0x33掩码, 2移位数 */ 38 byte_data = (byte_data & 0x0F) + ((byte_data >> 4) & 0x0F); /* 0x0F掩码, 4移位数 */ 39 40 return byte_data; 41 } 42 43 #ifdef __cplusplus 44 #if __cplusplus 45 } 46 #endif 47 #endif 48 49 #endif /* end of wlan_util_common.h */ 50