How do I get a specific range of numbers from rand ()?
Jul 30, 2009 · M + rand() / (RAND_MAX / (N - M + 1) + 1) (Note, by the way, that RAND_MAX is a constant telling you what the fixed range of the C library rand function is. You cannot set …
¿Cual es la diferencia entre rand y srand?
Jul 22, 2018 · me gustaria si me pudieran explicar bien cual es la diferencia, me confundo mucho con rand y srand, ¿cual es la diferencia? He buscado en otros sitios, pero confundo más. Gracias.
How does rand() work in C? - Stack Overflow
Oct 28, 2015 · The rand() function returns a pseudo-random integer in the range 0 to RAND_MAX inclusive (i.e., the mathematical range [0, RAND_MAX]). The srand() function sets its argument as …
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 (%) operator gives …
c - Rand Implementation - Stack Overflow
Jan 22, 2011 · rand and srand are usually implemented as a simple LCG, you can easily write your own (it's few lines of code) without looking for the sources of rand and srand. Notice that, if you need …
Generate a value between 0.0 and 1.0 using rand () - Stack Overflow
The OP's reasoning for trying it was wrong, but had this been necessary, the UB could've been avoided by adding 1.0 instead of 1, which would coerce RAND_MAX to double type and so avoid the integer …
Why is the use of rand() considered bad? - Stack Overflow
Oct 18, 2018 · Usage of rand() is usually frowned upon despite using a seed via srand(). Why would that be the case? What better alternatives are available?
How do I generate a random number for each row in a T-SQL select?
I need a different random number for each row in my table. The following seemingly obvious code uses the same random value for each row. SELECT table_name, RAND() magic_number FROM …
Using stdlib's rand() from multiple threads - Stack Overflow
Mar 14, 2013 · The function rand_r() is supplied with a pointer to an unsigned int, to be used as state. This is a very small amount of state, so this function will be a weak pseudo-random generator. Try …
Why does rand () + rand () produce negative numbers?
Basically rand() produce numbers between 0 and RAND_MAX, and 2 RAND_MAX > INT_MAX in your case. You can modulus with the max value of your data-type to prevent overflow.