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33 lines
705 B
33 lines
705 B
# test floating point floor divide and modulus
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# it has some tricky corner cases
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# pyboard has 32-bit floating point and gives different (but still
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# correct) answers for certain combinations of divmod arguments.
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def test(x, y):
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div, mod = divmod(x, y)
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print(div == x // y, mod == x % y, abs(div * y + mod - x) < 1e-6)
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test(1.23456, 0.7)
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test(-1.23456, 0.7)
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test(1.23456, -0.7)
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test(-1.23456, -0.7)
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a = 1.23456
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b = 0.7
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test(a, b)
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test(a, -b)
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test(-a, b)
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test(-a, -b)
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for i in range(25):
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x = (i - 12.5) / 6
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for j in range(25):
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y = (j - 12.5) / 6
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test(x, y)
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# test division by zero error
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try:
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divmod(1.0, 0)
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except ZeroDivisionError:
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print('ZeroDivisionError')
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