bug#40744: guile-2.2.4 (integer-length 0) erroneously returns 0, not 1

[Rob Browning]

Hmm, the zero result appears to be intentional, i.e. it's mentioned in
the examples here:

  https://www.gnu.org/software/guile/manual/guile.html#Arithmetic

and is also specified by Chez Scheme and SRFI-60:

  https://www.scheme.com/csug8/numeric.html
  https://srfi.schemers.org/srfi-60/srfi-60.html

-- 
Rob Browning
rlb @defaultvalue.org and @debian.org
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