def _optimal(first, count):
# Returns (sum, coeff ** count)
if count & 1:
sub_sum, sub_pow = _optimal(first, count - 1)
return first + sub_sum * coeff, sub_pow * coeff
if not count:
return 0, 1
sub_sum, sub_pow = _optimal(first, count >> 1)
return sub_sum * (1 + sub_pow), sub_pow * sub_pow
def optimal(count):
"""Optimal algorithm based on the idea similar to the binary
exponentiation."""
return _optimal(start, count)[0]
if __name__ == '__main__':
core.run(
'geom_sum',
None,
core.optimized(naive) + [
('optimal', optimal),
],
[
(None, 'linear', core.linear_scale(10000, 15)),
],
)
if n & 1:
return d, c + d
return c, d
def fast_doubling(n):
"""Fast doubling - implementation via matrix exponentiation
with the redundant calculations removed."""
return _fast_doubling(n)[0]
if __name__ == '__main__':
# Test all functions on different testcases
core.run(
'fib', None,
core.optimized(naive) + [
('matrices', classic_matrices),
('fast dbl', fast_doubling),
],
[
('small', 'linear', core.linear_scale(30000, 15)),
('big', 'linear', core.linear_scale(300000, 15)),
],
)
# Test optimized function with different settings
core.run(
'fib', None,
core.optimized(naive),
[('demo', 'linear', core.linear_scale(60000, 30))],
)
elem *= coeff
return res
def _optimal(first, count):
# Returns (sum, coeff ** count)
if count & 1:
sub_sum, sub_pow = _optimal(first, count - 1)
return first + sub_sum * coeff, sub_pow * coeff
if not count:
return 0, 1
sub_sum, sub_pow = _optimal(first, count >> 1)
return sub_sum * (1 + sub_pow), sub_pow * sub_pow
def optimal(count):
"""Optimal algorithm based on the idea similar to the binary
exponentiation."""
return _optimal(start, count)[0]
if __name__ == '__main__':
core.run(
'geom_sum', None,
core.optimized(naive) + [
('optimal', optimal),
],
[
(None, 'linear', core.linear_scale(10000, 15)),
],
)
d = b * b + a * a
if n & 1:
return d, c + d
return c, d
def fast_doubling(n):
"""Fast doubling - implementation via matrix exponentiation
with the redundant calculations removed."""
return _fast_doubling(n)[0]
if __name__ == '__main__':
# Test all functions on different testcases
core.run(
'fib', None,
core.optimized(naive) + [
('matrices', classic_matrices),
('fast dbl', fast_doubling),
],
[
('small', 'linear', core.linear_scale(30000, 15)),
('big', 'linear', core.linear_scale(300000, 15)),
],
)
# Test optimized function with different settings
core.run(
'fib', None,
core.optimized(naive),
[('demo', 'linear', core.linear_scale(60000, 30))],
)
a += i
res += a
else:
# Test "else" case
res += 8943 * (res ^ 2321)
# Test that local and global variables were successfully assigned
# after the ending of the loop
res += global_var + local_var
r = 3
# Loop with unused counter
for it1 in xrange(-3231, n):
r = r - 33 + d * 2
q = 43
# Loop with used and modified counter
for it2 in xrange(-3231, n, 4345):
q = (3 + 4) * q - (it2 * 2 - 8) * 3
it2 = q + 3 - e
# Empty loop
for it3 in xrange(n):
pass
# Return ordered list with values of all local variables
return tuple(sorted(locals().items(), key=lambda item: item[0]))
if __name__ == "__main__":
core.run("int_operations", None, core.optimized(naive), [(None, "linear", core.linear_scale(600000, 15))])