Folks,
The story is that it was set to use 'double' instead of 'float' when
handling coordinate inside GV.
Originally it was set to sidestep the implicit type conversion from
double <--> float that occur between GV / OGR and GV / PROJ.
It turn out that it make no discernible difference whether on or not
(as far as I can tell.)
This switch is require for the S52 plug-in as everything is in
double on the S52 side and S52 use GV coordinate "in place".
> Ah! I knew I forgot something!! If I remember correctly
> from way way
> back, the GV_USE_DOUBLE_PRECISION_COORD flag was also
> needed for
> general use.
So it's not required for general use. It double the memory foot print
for the coordinate. So it add overhead. YMMV.
rgds,
Sylvain.
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