Principle behind the working of random function

vinayvarma189

Hey everyone, This is my first question at this forum,so please excuse if this is in an informal way. The thing I am wondering about is how does a random function work?.I know What a random function does,but how does it bring a random number, i mean how is the computer programmed to bring a random number? :-? . can anyone help.

Chrisir

https://en.wikipedia.org/wiki/Random_number_generation

vinayvarma189

@Chrisir Thanks for answering but I could not understand it completely.Could you please be more clear and explain it to me by yourself.

GoToLoop

https://Reddit.com/r/computerscience/

jeremydouglass

how does a random function work?

For Processing specifically, the Java 7 language implements Random in java.util -- here is the reference explaining it, including citing the work that the algorithm is based on.

https://docs.oracle.com/javase/7/docs/api/java/util/Random.html

The wikipedia article that @Chrisir already gave you gives more background on "pseudorandom numbers" of this kind.

Processing then creates a function, random(), using java.util.Random. All the code that makes random() work is in the Processing source code in the PApplet.java under the RANDOM section:

https://github.com/processing/processing/blob/master/core/src/processing/core/PApplet.java#L4977

Finally, here is a general reference description of how random() works in processing:

https://processing.org/reference/random_.html

If you have more questions about pseudorandom numbers in general, and not in Processing specifically, you should ask in general forums like the https://Reddit.com/r/computerscience/ link that @GoToLoop shared.