_libc.py

importffi
importsys


_h=None

names= ("libc.so", "libc.so.0", "libc.so.6", "libc.dylib")


defget():
global_h
if_h:
return_h
err=None
forninnames:
try:
_h=ffi.open(n)
return_h
exceptOSErrorase:
err=e
raiseerr


defset_names(n):
globalnames
names=n


# Find out bitness of the platform, even if long ints are not supported
# TODO: All bitness differences should be removed from micropython-lib, and
# this snippet too.
bitness=1
v=sys.maxsize
whilev:
bitness+=1
v>>=1