lean4-htt/tests/elab/hmul2.lean
Garmelon 08eb78a5b2
chore: switch to new test/bench suite (#12590)
This PR sets up the new integrated test/bench suite. It then migrates
all benchmarks and some related tests to the new suite. There's also
some documentation and some linting.

For now, a lot of the old tests are left alone so this PR doesn't become
even larger than it already is. Eventually, all tests should be migrated
to the new suite though so there isn't a confusing mix of two systems.
2026-02-25 13:51:53 +00:00

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@[default_instance]
instance [Mul α] : HMul α (Array α) (Array α) where
hMul a as := as.map (a * ·)
instance [Mul α] : Mul (Array α) where
mul as bs := (as.zip bs).map fun (a, b) => a * b
#guard 2 * #[3, 4, 5] == #[6, 8, 10]
#guard (2:Nat) * #[3, 4, 5] == #[6, 8, 10]
#check fun x => x * 2
#check fun y : Int => let x := 1; x * y
#check fun y : Int => let_delayed x := 1; x * y
def f1 (n : Nat) (i : Int) :=
i * n
def f2 (n : Nat) (i : Int) :=
n * i
def f3 (n : Nat) (i : Int) :=
n * (n * (n * (n * i)))
def f4 (n : Nat) (i : Int) :=
n + (n + (n * (n * i)))
def f5 (n : Nat) (i : Int) :=
n + (n + (n * (i, i).1))
def f6 (n : Nat) (i : Int) :=
let y := 2 * i
let x := y * n
n + x
def f7 (n : Nat) (i : Int) :=
n + (n * 2 * i)
def f8 (n : Nat) (i : Int) :=
n * 2 + (i * 1 * n * 2 * i)
def f9 [Mul α] (a : α) (as bs : Array α) : Array α :=
a * as * bs
def f10 (a : Int) (as bs : Array Int) : Array Int :=
2 * a * as * bs
def f11 (a : Int) (as bs : Array Int) : Array Int :=
3 * a * as * (2 * bs)
def f12 [Mul α] (as bs : Array α) : Array α :=
as.foldl (init := bs) fun bs a => a * bs