lean4-htt/tests/lean/int_eval.lean
2017-03-09 18:41:19 -08:00

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#eval (1073741823:int)
#eval (1073741824:int)
#eval ((1073741824:int) + (1:int) - (3:int))
#eval - (2:int)
#eval - (1000:int)
#eval 10 - (1000:int)
#eval (1073741824:int) * 10
#eval (100000:int) * (-3:int)
#eval -(1073741823:int)
#eval ((1073741824:int) + (1:int) - (1:int))
#eval int.of_nat 1000
#eval int.of_nat 1073741823
def Abs : int → nat
| (int.of_nat n) := n
| (int.neg_succ_of_nat n) := n + 1
#eval 10000
#eval Abs (- 10000)
#eval Abs (-1073741823)
#eval Abs (-1073741824)
#eval Abs (-1073741825)
#eval -(1073741823:int) * 1000000000