Date: Tue, 22 Oct 2002 13:28:56 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Stefan Farfeleder <e0026813@stud3.tuwien.ac.at> Cc: Kris Kennaway <kris@obsecurity.org>, Ruslan Ermilov <ru@FreeBSD.ORG>, current@FreeBSD.ORG, standards@FreeBSD.ORG Subject: Re: libstdc++ does not contain fabsl symbol Message-ID: <3DB5B508.25EC9C14@mindspring.com> References: <20021020025400.GA13776@xor.obsecurity.org> <20021022082241.GG3325@sunbay.com> <20021022184605.GA85779@xor.obsecurity.org> <3DB5A9B6.1C2D1684@mindspring.com> <20021022200827.GA252@frog.fafoe>
next in thread | previous in thread | raw e-mail | index | archive | help
Stefan Farfeleder wrote: [ ... fabsl() ... ] > > What standard defines this thing, which g++ has as a built-in? > > > > Alternately, the use could avoid adding the "-fno-builtin", and > > the problem would go away. > > ISO C99 > > 7.12.7.2 The fabs functions > Synopsis > #include <math.h> > double fabs(double x); > float fabsf(float x); > long double fabsl(long double x); Thanks; that's exactly what I wanted to know. The answer, then, is that FreeBSD is not fully compliant with ISO C99, although there is work in progress to add compliance. I personally don't understand why the avoidance of the built-in. It's worthwhile adding the function, but rather than doing this one at a time, and finding out 10 years later that FreeBSD is finally compliant (in 2011, after the 2009 version of the standard is out ;^)), it's probably a better idea to write an "external reference compliance program", so that you can compile it up, and find out all the undefined references at once, so that we can make a concerted effort. I expect this will have to be done by someone with access to the ISO C99 standard, unles it's postied online for free somewhere? -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3DB5B508.25EC9C14>