[GRASS-user] r.terraflow: dcell low precision?

[Rich Shepard]

   Starting r.terraflow produces this warning:

WARNING: raster aber5m is of type DCELL_TYPE --precision may be lost.

   My understanding is that raster maps have three possible data types:
integer (cell), floating point single-precision (fcell), and floating point
double precision (dcell). If my understanding is correct then I don't get
the warning.

   Explanation, please.

Rich