contributed by < joshyue >
測驗 1
參照 你所不知道的 C 語言: bitwise 操作，考慮 next_pow2 可針對給定無號 64 位元數值 x，找出最接近且大於等於 2 的冪的值
uint64_t next_pow2(uint64_t x)
{
x |= x >> 1;
x |= x >> 1;
x |= x >> 1;
- contributed by < joshyue > 實驗環境 $ gcc --version gcc (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0 $ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian
joshyue changed 2 years agoView mode
