tvl-depot/data_structures_and_algorithms/bit-manipulation.py
William Carroll 5c9079a410 Splice ./universe directory into ./
Manually merging:
- README.md: I added the description from universe/README.md into the heading of
  dotfiles/README.md.
- .envrc: dotfiles/.envrc was a superset of universe/.envrc
- .gitignore: Adding some of the ignored patterns from universe/.gitignore to
  dotfiles/.gitignore

Everything else here should be a simple rename.
2020-01-29 14:43:20 +00:00

32 lines
529 B
Python

def test(x, i):
return x & (1 << i) != 0
def set(x, i):
return x | (1 << i)
def clear(x, i):
return x & ~(1 << i)
def toggle(x, i):
if test(x, i):
return clear(x, i)
else:
return set(x, i)
def test_single(x):
if x == 0:
return False
else:
return x & (x - 1) == 0
print(test(0b1010, 3))
print('{0:b}'.format(set(0b1010, 1)))
print('{0:b}'.format(clear(0b1010, 1)))
print('{0:b}'.format(toggle(0b1010, 2)))
print(test_single(0b1010))
print(test_single(0b1000))