This is usual in Lisp (compilers/implementations) and i wouldn't be surprised if it was invented on the seventies once large (i.e. 36-bit long) registers were available.
https://www.snellman.net/blog/archive/2017-09-04-lisp-number...
This is usual in Lisp (compilers/implementations) and i wouldn't be surprised if it was invented on the seventies once large (i.e. 36-bit long) registers were available.