Re: Latest master is broken

[Paul Eggert]

Stefan Monnier wrote:
> Should be harmless.

Yes, although it was annoying that the change caused 
(hash-table-rehash-threshold (make-hash-table)) to yield 0.800000011920929 
instead of the correct value of 0.8, due to a rounding error caused by 
converting double to float and back again.

I just now fixed this by changing struct Lisp_Hash_Table to contain a double 
rather than a float. If it's a significant win to save 4 bytes in struct 
Lisp_Hash_Table by using a float rather than a double, then we can do that, 
albeit at the cost of complicating the code elsewhere.