mincinfo -attvalue precision

[andrewjanke]

$ mincinfo -attvalue zspace:step test.mnc

0.0060000000000000001249

h5dump test.mnc | grep 06
(0): 0.006

mincinfo reports
0.0060000000000000001249 while hd5dump reports 0.06 exactly, I would
say the problem is with mincinfo. Of course a 1e-20 precision is
hardly sensical for most applications, but clearly when you start to
do math with these values it can still bite you.

Would it make sense to limit the precision with which mincinfo
-attvalue reports output? Either 'hard', or under user control?
Equivalent to the -m option to hd5dump perhaps (e.g., something like
"mincinfo -fp_format '%.6f' -attvalue xspace:step ...")?