character_offset和bit_offset是什么函数啊解决办法

character_offset和bit_offset是什么函数啊unsigned character_offset( unsigned bit_number )unsigned b

character_offset和bit_offset是什么函数啊
unsigned character_offset( unsigned bit_number );
unsigned bit_offset( unsigned bit_number );
这两个是什么函数啊

[解决办法]
反正不是标准函数……可能是某人写的库吧,连风格都不好,省略了int