26 lines
522 B
Python
26 lines
522 B
Python
# test floating point floor divide and modulus
|
|
# it has some tricky corner cases
|
|
|
|
def test(x, y):
|
|
div, mod = divmod(x, y)
|
|
print('%.8f %.8f %.8f %.8f' % (x // y, x % y, div, mod))
|
|
print(div == x // y, mod == x % y, abs(div * y + mod - x) < 1e-15)
|
|
|
|
test(1.23456, 0.7)
|
|
test(-1.23456, 0.7)
|
|
test(1.23456, -0.7)
|
|
test(-1.23456, -0.7)
|
|
|
|
a = 1.23456
|
|
b = 0.7
|
|
test(a, b)
|
|
test(a, -b)
|
|
test(-a, b)
|
|
test(-a, -b)
|
|
|
|
for i in range(25):
|
|
x = (i - 12.5) / 6
|
|
for j in range(25):
|
|
y = (j - 12.5) / 6
|
|
test(x, y)
|