use iterator for 2-arg Visitor as well as single-arg
-rw-r--r-- 31 .gitignore
-rw-r--r-- 238 .gitmodules
-rw-r--r-- 65 Makefile
-rw-r--r-- 2496 README.md
m--------- - berkeley-softfloat-3
m--------- - berkeley-testfloat-3
drwxr-xr-x - src