Re-enable deftransform for random integers
## Describe the bug We have a [`deftransform` for word-sized random integers](src/compiler/float-tran.lisp#L279). This was used for the MT19937 generator. I think we forgot about this when we implemented the xoroshiro generator. We can see this if we place this code in a file and compile it to produce a trace file: ``` (defun zot () (random 100000)) ``` ## To Reproduce Steps to reproduce the behavior: 1. Compile the above code with `:trace-file t` 2. Look at the trace file. You can see a call to `truncate`. ## Expected behavior We should be doing a multiply instead of a truncate. Note also that this is a bug in that `random` uses a [multiplication](src/code/rand-xoroshiro.lisp#L493). We need to be consistent between the two code paths. I guess in practice, this is not so easy to see, but we could probably create a simple test for this. ## Desktop (please complete the following information): - OS: All - Version: Any version after xoroshiro was implemented.
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