[英]Convert long to two int and vice versa
如何将两个32位整数( int
)转换为一个64位long
,反之亦然?
long c = (long)a << 32 | b & 0xFFFFFFFFL;
int aBack = (int)(c >> 32);
int bBack = (int)c;
In Java, you don't need quite so many parentheses, or any masking on the reverse calculation. 在Java中,您不需要太多括号,也不需要反向计算任何掩码。
Ints to longs: 渴望多头:
long c = ((long)a << 32) | ((long)b & 0xFFFFFFFFL);
I'll leave it as an exercise for the reader to perform the reverse calculation. 我将把它作为练习让读者进行反向计算。 But the hint is;
但暗示是; use more bit-shifts and bit-masks .
使用更多的位移和位掩码 。
(Edited as per comment by T. Murdock) (根据T. Murdock的评论编辑)
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