> > > diff -r1.29 FGInitialCondition.cpp
> > > 666a667,668
> > > > if (f3-f1 == 0.0)
> > > > f3+= 0.000000000001;
> >
> >
> > We have seen this happen before. This does prevent a division by zero.
> > However, Tony has mentioned before that f3 should *never* be zero. If it
is,
> > there is something else happening upstream from that point.
>
> Does this error show up if FG is set to exit/crash/whatever on FPE
> exceptions?
>
When I enable FPE exceptions, MSVC stop on :
inline void FGPhysicalProperties::WindAt(sgVec3 ret, const WeatherPrecision
a) const
{
typedef map<FGPhysicalProperties::Altitude, FGWindItem>::const_iterator
vector_iterator;
vector_iterator it = Wind.lower_bound(a);
vector_iterator it2 = it;
it--;
//now I've got it->alt < a < it2->alt so I can interpolate
sgSubVec3(ret, *it2->second.getValue(), *it->second.getValue());
>>> sgScaleVec3(ret, (a - it2->first) / (it2->first - it->first)); << div
by 0
sgAddVec3(ret, *it2->second.getValue());
}
Hope that helps !
Cheers,
-Fred
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