Re: libpq: Newbie help w/ data type conversions on

jtv@xxxxxxxxx wrote:

> Marvin Bellamy <marvin.bellamy@xxxxxxxxxxxxxx> wrote:
>
>  
>
> > I'm building for MSVC 7.1.3088, VS .NET 2003 on Win XP.  I copied the
> > compiler headers and pointed the common file attributes to my PostgreSQL
> > install and I get this error:
> >
> > [snip]
> > ..\src\util.cxx(60) : warning C4244: 'initializing' : conversion from
> > 'double' to 'const float', possible loss of data
> > ..\src\util.cxx(60) : error C2124: divide or mod by zero
> >    
> Ah, that's a bit of workaround code for compilers that don't have proper
> ways of producing NANs.  The sample configuration headers for your
> compiler don't say yet whether those proper ways are available, so the
> code assumes the worst and reverts to divide-by-zero (strictly at compile
> time, mind you, so neither the warning or the error is really appropriate)
> to generate NaNs.
>
> Easiest fix: define the PQXX_HAVE_QUIET_NAN preprocessor macro.  If that
> doesn't work (i.e. if the compiler doesn't provide quiet_NaN()), define
> PQXX_HAVE_NAN instead.  I can release an update over the coming days that
> fixes this, once I'm sure about what works.
>
>  
Defining the PQXX_HAVE_QUIET_NAN macro allowed the build to complete 
successfully.  Thanks!
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