On Wed, Mar 02, 2011 at sometime, Jay A. Kreibich wrote:
> On Tue, Mar 01, 2011 at 03:21:58PM +0000, David Gilbert scratched on the wall:
> > for(jj=0; jj<tree.nDim*2; jj++){
> > sqlite3_snprintf(512-nCell,&zCell[nCell],"
> > %f",(double)cell.aCoord[jj].f);
> >
> > That's against 3.7.4 but it looks like it's the same in the trunk.
> >
> > With that change the test suite passes. However, that %f looks a bit
> > odd a few lines below and is probably worth thinking about.
> Due to the way the floating point registers work on a PDP-7, in C all
> 32-bit float values are promoted to 64-bit double values when used
> in a var-arg. Hence, for output, "%f" can be safely used for both
> 32-bit and 64-bit floating point values. The tags "%f" and "%lf" are
> the same. (This isn't true for input functions such as scanf().)
Ah yes; and indeed that's what the sqlite's own printf does - always
fetches a double.
Still, the %lld case in my patch does need fixing.
(Note I'm not actually subscribed to the list, so please cc)
Dave
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