The underlying problem is that pow10.c is missing from plan9port. Once I copied it over and compiled it into the app it was fine. Maybe Russ can add it to plan9port ;-)
Thanks for the feedback! > as it's #defined... look for the source of pow10()... > >> libc.h redefines pow10 to be p9pow10. I cannot find the source for >> p9pow10 in plan9port, 9vx nor sysfromiso.