进制转换,小数转十六进制和十进制转二进制浮点数转十六进制-Binary conversion, decimal to hexadecimal and decimal to binary floating-point number to hexadecimal

将2,8,16进制文件转换到10进制数值(返回十进制数)-To 8, 16 to 10 decimal binary file conversion value (return decimal)