add nativeapis

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>

en/application-dev/reference/native-apis/log_8h.md

+# log.h
+
+
+## Overview
+
+Defines the logging functions of the HiLog module.
+
+Before outputting logs, you must define the service domain, and log tag, use the function with the specified log type and level, and specify the privacy identifier.
+
+Service domain: service domain of logs. You can define the value as required. Its value is a hexadecimal integer ranging from 0x0 to 0xFFFF.
+
+Log tag: a string used to identify the class, file, or service behavior.
+
+Log level: DEBUG, INFO, WARN, ERROR, or FATAL
+
+Parameter format: printf format string, which starts with a % character, including a parameter type identifier and a variable parameter.
+
+Privacy identifier: **{public}** or **{private}** added between the % character and the parameter type identifier in each parameter. If no privacy identifier is added, the parameter is considered to be **private**.
+
+Sample code:
+
+Defining the service domain and log tag:
+
+\#define LOG_DOMAIN 0x0201
+
+\#define LOG_TAG "MY_TAG"
+
+Outputting logs:
+
+HILOG_WARN([LOG_APP](_hi_log.md), "Failed to visit %{private}s, reason:%{public}d.", url, errno);
+
+Output:
+
+05-06 15:01:06.870 1051 1051 W 0201/MY_TAG: Failed to visit <private>, reason:503.
+
+**Since:**
+8
+
+**Related Modules:**
+
+[HiLog](_hi_log.md)
+
+
+## Summary
+
+
+### Macros
+
+| Name | Description | 
+| -------- | -------- |
+| [LOG_DOMAIN](_hi_log.md#log_domain)   0 | Defines the service domain for a log file.  | 
+| [LOG_TAG](_hi_log.md#log_tag)   NULL | Defines a string constant used to identify the class, file, or service.  | 
+| [OH_LOG_DEBUG](_hi_log.md#oh_log_debug)(type, ...)   ((void)[OH_LOG_Print](_hi_log.md#oh_log_print)((type), [LOG_DEBUG](_hi_log.md), [LOG_DOMAIN](_hi_log.md#log_domain), [LOG_TAG](_hi_log.md#log_tag), \_\_VA_ARGS__)) | Outputs DEBUG logs. This is a function-like macro.  | 
+| [OH_LOG_INFO](_hi_log.md#oh_log_info)(type, ...)   ((void)[OH_LOG_Print](_hi_log.md#oh_log_print)((type), [LOG_INFO](_hi_log.md), [LOG_DOMAIN](_hi_log.md#log_domain), [LOG_TAG](_hi_log.md#log_tag), \_\_VA_ARGS__)) | Outputs INFO logs. This is a function-like macro.  | 
+| [OH_LOG_WARN](_hi_log.md#oh_log_warn)(type, ...)   ((void)[OH_LOG_Print](_hi_log.md#oh_log_print)((type), [LOG_WARN](_hi_log.md), [LOG_DOMAIN](_hi_log.md#log_domain), [LOG_TAG](_hi_log.md#log_tag), \_\_VA_ARGS__)) | Outputs WARN logs. This is a function-like macro.  | 
+| [OH_LOG_ERROR](_hi_log.md#oh_log_error)(type, ...)   ((void)[OH_LOG_Print](_hi_log.md#oh_log_print)((type), [LOG_ERROR](_hi_log.md), [LOG_DOMAIN](_hi_log.md#log_domain), [LOG_TAG](_hi_log.md#log_tag), \_\_VA_ARGS__)) | Outputs ERROR logs. This is a function-like macro.  | 
+| [OH_LOG_FATAL](_hi_log.md#oh_log_fatal)(type, ...)   ((void)HiLogPrint((type), [LOG_FATAL](_hi_log.md), [LOG_DOMAIN](_hi_log.md#log_domain), [LOG_TAG](_hi_log.md#log_tag), \_\_VA_ARGS__)) | Outputs FATAL logs. This is a function-like macro.  | 
+
+
+### Enums
+
+| Name | Description | 
+| -------- | -------- |
+| [LogType](_hi_log.md#logtype) { LOG_APP = 0 } | Enumerates log types.  | 
+| [LogLevel](_hi_log.md#loglevel) {<br/>LOG_DEBUG = 3, LOG_INFO = 4, LOG_WARN = 5, LOG_ERROR = 6,<br/>LOG_FATAL = 7<br/>} | Enumerates log levels.  | 
+
+
+### Functions
+
+| Name | Description | 
+| -------- | -------- |
+| [OH_LOG_Print](_hi_log.md#oh_log_print) ([LogType](_hi_log.md#logtype) type, [LogLevel](_hi_log.md#loglevel) level, unsigned int domain, const char \*tag, const char \*fmt,...) \_\_attribute__((\_\_format__(os_log, 5, 6))) |Outputs logs.  | 
+| [OH_LOG_IsLoggable](_hi_log.md#oh_log_isloggable) (unsigned int domain, const char \*tag, [LogLevel](_hi_log.md#loglevel) level) | Checks whether logs of the specified service domain, log tag, and log level can be output.  |