Java is a popular programming language, and its java.util.random package contains a special class for generating random numbers using a modified Linear Congruential Generator.

This LCG is unique in that it uses a custom function to set the seed indirectly, and doesn't return the entire Seed value.

// This code is adapted from the Open JDK
// source code found here:
//
// https://github.com/openjdk/jdk/tree/master

// The current state value
state = 1138;

// Our constants
a = $5DEECE66D;
c = $B;

// Used to set the seed
function SetSeed( NewSeed ) {
	state = (NewSeed XOR $5DEECE66D) AND $FFFFFFFFFFFF;
}

// random number generator
function RandomNumber() {

	// Run the function
	state = ((a * state) + c) AND $FFFFFFFFFFFF;

	// Return the new value
	return state SHIFT_RIGHT 16;

}