32位与64位、单精度（single-precision）与双精度（double-precision

• kangaroo 发布于
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What’s the difference between a single precision and double precision floating point operation? float：精度范围 10−38∼103810−38∼1038 exp(−102)≈10−44exp⁡(−102)≈10−44 ，float 下溢 double：精度范围 10−308∼1030810−...