My platform is x86_64, and assume there are 3 variables whose types are all uint16_t: uint16_t a, b, c; And for the following two code snippets: (1) uint16_t tmp = b - a; uint16_t result1 = c - tmp; ...

Context: I want to verify the fact that under 32-bits, Ox8000 0000 - 1 = Ox7FFF FFFF, so if both of them are interpreted as signed integers, the sign will change from negative to positive. Here goes ...

I am currently using an open source Python package called snompy (https://github.com/TomVincentUK/snompy). While implementing the package, a function that defines the transfer matrix returns an ...

According to the C standard, signed integer overflow is undefined behavior. Fortran integers are signed integers. Does the Fortran standard mandate how overflow should be treated? In practice it seems ...

I want to understand more about int overflow in C++ on a 64-bit system. So I would like to stick to int for my understanding without casting / extending the type to unsigned or 64-bit and I am on ...

int sum = x+y; sum-x == y; If sum overflows, then sum-x will not be equal to y and overflow is detected. But if sum has not overflowed, then sum-x==y is equal to y. Then why is this logic not used? ...

I'm wondering if it is allowed in C++ to use overflow on purpose. In specific I want to increase a counter every cycle and when uint32_max is reached start from 0. In my mind the easy way would be: ...

Signed int arithmetic operations can overflow and underflow, and when that happens, that is undefined behavior as per the C++ standard (and C standard). At which point the program can be expected to ...

In running minimum/maximum problems, the e.g. minimum-so-far is often initialized to \infty in order to guarantee we "capture" every minimum, no matter where it is located. In Haskell, we ...

Is multiplication order important when allocating? Even if multiplication may affect things in general, what about common ordering concerns with allocation sizing? data = malloc(row * col * sizeof ...

I am working on a project where I need to implement a Neural Network on a microcontroller in C, and execution time is critical. I am trying to try techniques to speed up the running of the code, and ...

I'm trying to write a short code that calculates the Hamming weight of integers: class Solution { public: int hammingWeight(int n) { if(n==0){ return 0; }else{ ...

I have a variable on which I do a lot of arithmetic operations. My code was something like this: let a: u32 = 3; let res = (a*2) - 42 I had an overflow when a is too low, so I had to use ...

I need to compute recursively an integer number represented by an unsigned int down a tree. Each node is associated with an integer value calculated recursively by multiplying the numbers of its ...

I'm working with really big tensors from pytorch, and as a result of a certain operation I need my tensor to maintain really big values(which represent some indexes), but obviously overflow makes all ...