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[/] [tcp_socket/] [trunk/] [chips2/] [docs/] [source/] [examples/] [example_4.rst] - Rev 4
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Pseudo Random Number Generator
------------------------------
This example uses a
`Linear Congruential Generator (LCG) <http://en.wikipedia.org/wiki/Linear_congruential_generator>`_ to generate Pseudo Random Numbers.
.. code-block:: c
/*globals*/
unsigned long int seed;
void srand(unsigned long int s){
seed = s;
}
unsigned long rand(){
const unsigned long a = 1103515245ul;
const unsigned long c = 12345ul;
seed = (a*seed+c);
return seed;
}
void main(){
unsigned i;
for (i=0; i<4096; i++){
file_write(rand(), "x");
file_write(rand(), "y");
file_write(rand(), "z");
}
}
.. image:: images/example_4.png