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From: | "Dave Korn" <dave DOT korn AT artimi DOT com> |
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References: | <19c433eb0708240916t48556c38k563ada260702e1fd AT mail DOT gmail DOT com> |
Subject: | RE: Problem with lroundf() |
Date: | Fri, 24 Aug 2007 17:29:29 +0100 |
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On 24 August 2007 17:16, François-Xavier Coudert wrote: > Hi all, > > I think the following exhibits a bug in the lroundf() routine: Gahh, it's entirely likely, we keep finding cruft and corner cases in the fp math. Cygwin's maths routines come from newlib; post redirected there and fups-to set. > $ cat a.c > #include <math.h> > #include <stdio.h> > > int main (void) { > printf ("%d\n", (int) lroundf(0.7)); > } > > $ gcc a.c && ./a.exe > 0 > > The result of lroundf(0.7) should be 1, not 0. If lround() is used > instead of lroundf(), then it's working OK. > > I didn't file a PR in bugzilla because the bug report instructions say > to send a mail to this list, but I can open one if need be. > > Thanks, > FX Might get some spare time over the weekend to look at this with you, might not. Sorry I can't be more certain. cheers, DaveK -- Can't think of a witty .sigline today.... -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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