X := 0; Ln(X) seems to generated an exception without need to adjust exception mask. The reason I ask is that I get a strange crash while doing my charting program, I just suspected the reason being an exception is slipped through without being caught.
As this happened outside of IDE, I don't know the exact reason. I will do a screenshot and ask again. Thanks. 2013/3/5 Sven Barth <[email protected]> > Am 04.03.2013 16:05, schrieb Xiangrong Fang: > > As title. My question is not just "it is a language construct", but >> "WHY". What's the benefit of doing so? >> > I already wrote this in the other thread: if you write "ln(0)" then the > compiler will hardcode this as "NaN". I don't know what will happen with > "ln(x)" with "x := 0" though. Maybe you'll need to set the exception mask > correctly (see here: http://www.freepascal.org/**docs-html/rtl/math/** > setexceptionmask.html<http://www.freepascal.org/docs-html/rtl/math/setexceptionmask.html>) > to get an exception. > > Regards, > Sven > > > -- > ______________________________**_________________ > Lazarus mailing list > [email protected].**freepascal.org<[email protected]> > http://lists.lazarus.**freepascal.org/mailman/**listinfo/lazarus<http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus> >
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