2a67a49f31
This PR deprecates the tactics `simp_arith`, `simp_arith!`, `simp_all_arith` and `simp_all_arith!`. Users can just use the `+arith` option.
16 lines
310 B
Text
16 lines
310 B
Text
def g (x : Nat) := 2*x + 1
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def f (x : Nat) : Nat :=
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match g x with
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| 0 => 1
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| y + 1 => g x
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example : f x = 2*x + 1 := by
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unfold f
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split
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next h => simp +arith [g] at h
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next y h =>
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trace_state
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-- split tactic should *not* rewrite `g x` to `Nat.succ y`
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show g x = 2*x + 1
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simp [g]
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