big number printout

[Bill Schottstaedt]

Not sure this is a bug, but it is confusing:

guile> (version)
"1.8.5"
guile> (+ 40816513889983671.0 3.0)
40816513889983700.0
guile> (= (+ 40816513889983671.0 3.0) 40816513889983700.0)
#f
guile> (= (+ 40816513889983671.0 3.0) 40816513889983674.0)
#t