C#中double和float范例有两个特别值:
Infinity(无穷大):5.0 / 0.0 = Infinity NaN(not a number):0.0 / 0.0 = NaN
盘算表达式 0.0 / 0.0 = NaN,
NaN和Infinity能够在表达式中运用:
10 + Infinity = Infinity 10 + NaN = NaN Infinity * 0 = 0 NaN * 0 = NaN
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