How does rand() work in C? - Stack Overflow
Oct 28, 2015 · Like rand(), rand_r() returns a pseudo-random integer in the range [0, RAND_MAX]. The seedp argument is a pointer to an unsigned int that is used to store state …
c++ - How does modulus and rand () work? - Stack Overflow
Oct 24, 2013 · The equivalent half-open range is [0, n), and rand() % n == rand() % (n-0) + 0. So the lesson is: don't confuse half-open ranges for closed ranges. A second lesson is that this …
rand() function in c++ - Stack Overflow
Sep 27, 2011 · The c++ rand() function gives you a number from 0 to RAND_MAX (a constant defined in <cstdlib>), which is at least 32767. (from the c++ documentation) The modulus (%) …
How do I get a specific range of numbers from rand ()?
Jul 30, 2009 · Related: How to generate a random int in C?. Here is my answer there, which contains the definition for my int utils_rand(int min, int max) func, which returns a random …
generate a random number between 1 and 10 in c - Stack Overflow
Jul 24, 2013 · You need to seed the random number generator, from man 3 rand. If no seed value is provided, the rand() function is automatically seeded with a value of 1. and. The srand() …
c++ - rand() between 0 and 1 - Stack Overflow
No, because RAND_MAX is typically expanded to MAX_INT. So adding one (apparently) puts it at MIN_INT (although it should be undefined behavior as I'm told), hence the reversal of sign. To …
Using stdlib's rand () from multiple threads - Stack Overflow
Mar 14, 2013 · From the rand man page: The function rand() is not reentrant or thread-safe, since it uses hidden state that is modified on each call. So don't use it with threaded code. Use …
c++ - How to use <random> to replace rand ()? - Stack Overflow
Oct 4, 2015 · As bad as rand() is (and it is bad), removing it would represent a huge break with the C language. Just make sure that the badness of rand() truly is good enough for your …
Random number c++ in some range - Stack Overflow
Now, assuming you obtained integers in the range from 0 to RAND_MAX - 1 (inclusively) by using std::rand() % RAND_MAX, the chance of getting a 0 would now be doubled, since it will be the …
Differences between numpy.random.rand vs numpy.random.randn …
Nov 12, 2017 · np.random.rand is for Uniform distribution (in the half-open interval [0.0, 1.0)) np.random.randn is for Standard Normal (aka. Gaussian) distribution (mean 0 and variance 1) …