python3 float precision

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python3 float precision

In a word, you can't. 3.65 cannot be represented exactly as a float . The number that you're getting is the nearest number to 3.65 that has an ..., If you want to output up-to 3 digits but without 0 you need to format to 3 digit and rstrip zeros: for n in [1.23,1.234,1.1,1.7846]: ..., Unlike hardware based binary floating point, the decimal module has a user alterable precision (defaulting to 28 places) which can be as large ...,A consequence is that, in general, the decimal floating-point numbers you enter are ... decimal arithmetic suitable for accounting applications and high-precision ... ,Unlike hardware based binary floating point, the decimal module has a user alterable precision (defaulting to 28 places) which can be as large as needed for a ... , Floating-point numbers are represented in computer hardware as base ... suitable for accounting applications and high-precision applications.,如果想要其他常見驚喜更完整的描述,可以參考The Perils of Floating Point(浮點數的風險)。 ... 例如 float.as_integer_ratio() 方法会将浮点数表示为一个分数: >>>

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python3 float precision 相關參考資料
Python 3 Float Decimal PointsPrecision - Stack Overflow

In a word, you can't. 3.65 cannot be represented exactly as a float . The number that you're getting is the nearest number to 3.65 that has an ...

https://stackoverflow.com

Python 3 : print float precision without zero followed - Stack ...

If you want to output up-to 3 digits but without 0 you need to format to 3 digit and rstrip zeros: for n in [1.23,1.234,1.1,1.7846]: ...

https://stackoverflow.com

9.4. decimal — Decimal fixed point and floating point ...

Unlike hardware based binary floating point, the decimal module has a user alterable precision (defaulting to 28 places) which can be as large ...

https://docs.python.org

15. Floating Point Arithmetic: Issues and Limitations — Python ...

A consequence is that, in general, the decimal floating-point numbers you enter are ... decimal arithmetic suitable for accounting applications and high-precision ...

https://docs.python.org

decimal — Decimal fixed point and floating point arithmetic ...

Unlike hardware based binary floating point, the decimal module has a user alterable precision (defaulting to 28 places) which can be as large as needed for a ...

https://docs.python.org

14. Floating Point Arithmetic: Issues and Limitations — Python ...

Floating-point numbers are represented in computer hardware as base ... suitable for accounting applications and high-precision applications.

https://docs.python.org

15. 浮點數運算:問題與限制— Python 3.8.3 說明文件

如果想要其他常見驚喜更完整的描述,可以參考The Perils of Floating Point(浮點數的風險)。 ... 例如 float.as_integer_ratio() 方法会将浮点数表示为一个分数: >>>

https://docs.python.org