Noted here: https://github.com/JuliaLang/julia/pull/26056. signif is one of the last (the last?) function to take a positional base argument instead of it being passed as a keyword. It seems like it would feel more consistent for this to be a keyword as well to match other functions taking a base argument.
Also round, ceil, floor, trunc.
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Also
round,ceil,floor,trunc.