bug#51209: 29.0.50; Calc nroot error variable is void: 'math-nrf-n

[Iñaki Cornejo]

In calc-mode, take the nroot of a number where the result is not an
exact integer. Integer indices below 11 don't work except for 1, 2 and 4
(as far as I've been able to tell). I've tested exponentiation with both
fractional indices and by doing the inverse operation (I ^). When
applying the operation, the result is shown as nroot(r, n) and the
message: "Variable is void: 'math-nrf-n" is shown in the minibuffer.
This problem does not occur however when the index is a float.


In GNU Emacs 29.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.30, cairo 
version 1.17.4)
 of 2021-10-06 built on heartofgold
Repository revision: 8d53c23f90aab6e527c61137ae43274c7a36eca7
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12013000
System Description: Arch Linux

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