bit-manipulation

来源： https://stackoverflow.com/questions/64016415/check-if-the-difference-between-two-unsigned-integers-is-at-most-1

来源： https://stackoverflow.com/questions/64040944/can-i-reinterpret-cast-the-parameter-of-a-constexpr-function

来源： https://stackoverflow.com/questions/64040944/can-i-reinterpret-cast-the-parameter-of-a-constexpr-function

来源： https://stackoverflow.com/questions/10445433/lisp-way-of-looping-over-bits-of-an-integer

来源： https://stackoverflow.com/questions/10445433/lisp-way-of-looping-over-bits-of-an-integer

来源： https://stackoverflow.com/questions/10445433/lisp-way-of-looping-over-bits-of-an-integer

来源： https://stackoverflow.com/questions/63604914/how-can-i-speed-up-the-binary-gcd-algorithm-using-builtin-ctz

来源： https://stackoverflow.com/questions/63604914/how-can-i-speed-up-the-binary-gcd-algorithm-using-builtin-ctz

来源： https://stackoverflow.com/questions/8965521/how-to-turn-off-some-bits-while-ignoring-others-using-only-bitwise-operators

问题 Doing some tests with bitwise operations / shifting with JavaScript 0x80000000 >> 1 // returns -1073741824 (-0x40000000) I would expect that to return 0x40000000 since 0x40000000 >> 1 // returns 0x20000000 0x20000000 >> 1 // returns 0x10000000 回答1: Its an arithmetic shift that's why the sign is preserved, to do a logical shift use >>> 0x80000000 >>> 1 // returns 1073741824 (0x40000000) 回答2: In Javascript, >> is the Signed Right Shift Operator . In §11.7.2 of the language specification it says