Comment 1 for bug 1679426

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Thorsten Glaser (mirabilos) wrote :

Not a bug: There is no “**” in POSIX shell or C either.

In general, the usefulness of this operator is rather limited in the scope of shell arithmetics (either mksh or POSIX), but I’ll keep this open as a wishlist item in case someone is bored or something. (No -lm allowed.)