A brief introduction to Infinity and NaN in C#

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There are two special values ​​​​in double and float types in C#:

Infinity（无穷大）：5.0 / 0.0 = Infinity
NaN（not a number）：0.0 / 0.0 = NaN

Calculation expression 0.0 / 0.0 = NaN,

NaN and Infinity can be used in expressions:

10 + Infinity = Infinity
10 + NaN = NaN
Infinity * 0 = 0
NaN * 0 = NaN

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