JIT

fix doctest #83

Job	Run time
i686-pc-windows-msvc/msvc (Debug)	18m 42s
i686-pc-windows-msvc/msvc (Release)	8m 34s
x86_64-pc-windows-msvc/msvc (Debug)	18m 42s
x86_64-pc-windows-msvc/msvc (Release)	9m 0s
aarch64-pc-windows-msvc/msvc (Debug)	3m 49s
aarch64-pc-windows-msvc/msvc (Release)	5m 21s
x86_64-apple-darwin/clang (Debug)	15m 7s
x86_64-apple-darwin/clang (Release)	16m 40s
aarch64-apple-darwin/clang (Debug)	9m 29s
aarch64-apple-darwin/clang (Release)	14m 57s
x86_64-unknown-linux-gnu/gcc (Debug)	8m 24s
x86_64-unknown-linux-gnu/gcc (Release)	9m 49s
x86_64-unknown-linux-gnu/clang (Debug)	8m 40s
x86_64-unknown-linux-gnu/clang (Release)	9m 1s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 15m 13s
aarch64-unknown-linux-gnu/gcc (Release)	57m 24s
aarch64-unknown-linux-gnu/clang (Debug)	1h 13m 13s
aarch64-unknown-linux-gnu/clang (Release)	40m 30s
	6h 42m 35s

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