C++ convert string to uint64_t
Try std::stoull if you are using C++11 or greater. This post may also be of help. I didnt mark this as a duplicate because the other question is about C.
uint64
Macro representing maximum value for uint64_t
Using the cstdint header portably can be quite a challenge (it is missing from some MSVC implementations). At the same time numeric_limits::max() can be hard to use without constexpr and it is not actually required to work with uint64_t. If you don’t care about those things too much, std::numeric_limits<uint64_t>::max() will most likely do the trick. … Read more
Unexpected uint64 behaviour 0xFFFF’FFFF’FFFF’FFFF – 1 = 0?
By default, NumPy converts Python int objects to numpy.int_, a signed integer dtype corresponding to C long. (This decision was made back in the early days when Python int also corresponded to C long.) There is no integer dtype big enough to hold all values of numpy.uint64 dtype and numpy.int_ dtype, so operations between numpy.uint64 … Read more
difference between stdint.h and inttypes.h
stdint.h Including this file is the “minimum requirement” if you want to work with the specified-width integer types of C99 (i.e. int32_t, uint16_t etc.). If you include this file, you will get the definitions of these types, so that you will be able to use these types in declarations of variables and functions and do … Read more