test: s/float/float64/
test: s/float/float64/

Otherwise gccgo gives an extra error message not matched by errchk.

R=adg, rsc
CC=golang-dev
http://codereview.appspot.com/4053042

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go