On April 17, 2022 7:30:51 PM UTC, lkcl <luke.leighton at gmail.com> wrote: >adding 0xffffffff is basically "subtract 1" https://libre-soc.org/openpower/isa/svfixedarith/ i found places in other pseudocode that just do +1 or -1 so used that. still truncates into the destination. l.