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删除一些过时的C代码 (#565)
* 删除C版本的crc库 * 删除lockref * 删除过时的libc文档以及wait.c * 删除过时的C版本kfifo代码及文档 * 移除未用到的lz4库 * 删除内核的stdlib.c * 删除fabs.c * fmt * 使得put_string系统调用能够通过tty输出颜色 暂且这样改,这一部分应该是用户层面提供的功能,后续删除 --------- Co-authored-by: GnoCiYeH <heyicong@dragonos.org>
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@ -693,36 +693,3 @@
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**size**
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  待拷贝的数据大小
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## CRC函数
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### 函数列表
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**`uint8_t crc7(uint8_t crc, const uint8_t *buffer, size_t len)`**
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**`uint8_t crc8(uint8_t crc, const uint8_t *buffer, size_t len)`**
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**`uint16_t crc16(uint16_t crc, uint8_t const *buffer, size_t len)`**
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**`uint32_t crc32(uint32_t crc, uint8_t const *buffer, size_t len)`**
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**`uint64_t crc64(uint64_t crc, uint8_t const *buffer, size_t len)`**
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### 描述
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  用于计算循环冗余校验码
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### 参数说明
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**crc**
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  传入的CRC初始值
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**buffer**
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  待处理的数据缓冲区
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**len**
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  缓冲区大小(字节)
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