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;;; TOOL: run-interp
;;; ARGS*: --enable-tail-call
(module
(func (export "fac10") (result i32)
i32.const 10
i32.const 1
call $fac
return)
(;; Tail call version of factorial ;;)
(;; fac(Ix,So) => Ix==0?So:fac(Ix-1,So*Ix) ;;)
(func $fac (param i32 i32) (result i32)
local.get 0
i32.const 0
i32.gt_s
if (result i32)
local.get 0
i32.const 1
i32.sub
local.get 1
local.get 0
i32.mul
return_call $fac
else
local.get 1
return
end)
)
(;; STDOUT ;;;
fac10() => i32:3628800
;;; STDOUT ;;)
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