我怎么能够把六dec的双sion复数翻一番?
举例来说,鉴于<代码> 404500000000 ,我如何回到“代码>42.0的双重位置?
包装六dec,将其包装成倍:
[ 4045000000000000 ].pack("H*").unpack("G").first # => 42.0
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