1 | #!/usr/bin/env python2
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2 | """
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3 | mycpp/examples/arith_ops.py
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4 | """
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5 | from __future__ import print_function
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6 |
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7 | import os
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8 | from mycpp.mylib import log
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9 |
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10 |
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11 | def run_tests():
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12 | # type: () -> None
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13 |
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14 | for i in xrange(8):
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15 | log("%d // 3 = %d", i, i // 3)
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16 |
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17 | log('')
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18 |
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19 | # SEMANTIC DIFFERENCE with negative numbers:
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20 | #
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21 | # - Python: -1 / 3 == -1 and
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22 | # -4 / 3 == -2
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23 | # it rounds toward negative infinity
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24 | # - C++: -1 / 3 == 0
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25 | # -4 / 3 == -1
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26 | # it rounds toward zero
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27 |
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28 | # TODO: We could create a function like python_div() to make them identical?
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29 |
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30 | if 0:
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31 | for i in xrange(8):
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32 | log("%d // 3 = %d", -i, -i // 3)
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33 |
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34 |
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35 | def run_benchmarks():
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36 | # type: () -> None
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37 | pass
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38 |
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39 |
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40 | if __name__ == '__main__':
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41 | if os.getenv('BENCHMARK'):
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42 | log('Benchmarking...')
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43 | run_benchmarks()
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44 | else:
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45 | run_tests()
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