Re: [問題] 計算數字的二進制長度
看板C_and_CPP (C/C++)作者littleshan (我要加入劍道社!)時間16年前 (2009/09/18 09:50)推噓5(5推 0噓 4→)留言9則, 3人參與討論串4/4 (看更多)
以下純屬惡搞，小朋友不要學
unsigned int binary_length(unsigned int i)
{
if(!i) return 0;
union {
float f;
struct {
unsigned int mantissa:23;
unsigned int exp:8;
unsigned int sign:1;
} i;
} u;
u.f = i;
return u.i.exp - 126;
}
--
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09/18 10:07, , 1F
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09/18 20:50, , 9F
09/18 20:50, 9F
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