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 GPG as of 2011-07-10 E6A9 DA3C C9FD 1FF8 C676 D2C4 C0F0 39E9 ED1B 597A GPG as of 2002-11-03 14DD 432F AE39 534D B592 F9A0 25C8 D377 8C7E 73A4
