1st I did multiple searches here and via google trying to find this so sorry ahead of time if I didn't use the right search terms to find it.
I'm rewriting some legacy Java code into Javascript and I've got it all working except for pseudo random number generator... I need the Javascript version of this code to have repeatable output via both the Java and Javascript versions of this code as such I can't use Javascript's RN generator... I also can't change the legacy code to use another RN generator....
So I'm hoping someone had been in the similar situation and has already done this and written/ported Java's RNG into Javascript?
Is it even possible given javascripts bit wise operators only work with a 32 bit word while Java's RNG is based on 64 bit seed... obviously would need two variables each holding 1/2 the seed...
From
https://docs.oracle.com/javase/8/docs/api/java/util/Random.html
Java's setSeed does
(seed ^ 0x5DEECE66DL) & ((1L << 48) - 1)
and next does
(seed * 0x5DEECE66DL + 0xBL) & ((1L << 48) - 1) and returning (int)(seed >>> (48 - bits)).
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