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C语言中单双精度数表示什么意思

更新时间: 2020-07-09 00:00:00     

c语言中单精度数和双精度数的本质区别在于数据类型所占的内存字节,浮点数,在C语言中使用的是IEEE754浮点数编码,该标准规定了单精度浮点数和双精度浮点数所占的内存字节,一般单精度数占用4个字节,双精度数占用8个字节,扩展双精度数占用80个字节。

关键词: 语言 精度 表示 什么 意思

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