2014-09-09 16:21:30 -07:00
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import data.int
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open int
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2014-10-02 16:20:52 -07:00
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constant abs : int → int
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2014-10-21 14:08:07 -07:00
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notation `|` A `|` := abs A
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2014-10-02 16:20:52 -07:00
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constants a b c : int
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2014-09-09 16:21:30 -07:00
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check |a + |b| + c|
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