Re: Prevent leaking _USE_MATH_DEFINES outside of qwt_math.h

[Uwe R. <Uwe...@ti...>]

Hi Goran,

> I believe one should also #undef _USE_MATH_DEFINES after qmath.h has been
> included ...

Yes of course and in all branches >= 6.2 this had been fixed quite some 
time ago.

Concerning 6.1 I'm not sure as removing the side effect from including 
qwt_math.h will break application code, that depends on it.

ciao,
Uwe