c - 如何将一个 64 位数字拆分为八个 8 位值？

Question

有没有一种简单的方法可以将一个 64 位(unsigned long long)变量拆分为八个 int8_t 值？

例如:

//1001000100011001100100010001100110010001000110011001000110011111
unsigned long long bigNumber = 10455547548911899039;
int8_t parts[8] = splitULongLong(bigNumber);

parts 类似于:

[0] 10011111

[1] 10010001

[2] 00011001

...

[7] 10010001

Answer 1

 {
   uint64_t v= _64bitVariable;
   uint8_t i=0,parts[8]={0};
   do parts[i++]=v&0xFF; while (v>>=8);
 }