> > I'm getting the following regression errors with a backend > built using > > Visual C++: > > Is HAVE_CBRT getting defined? Either their cbrt() routine or > our default one seems to be generating slightly-off answers. > The default one (at the bottom of float.c) certainly looks a > bit cheesy, but if it fails this test you'd think we'd have > heard about that sooner.
HAVE_CBRT is not set. If I undefine HAVE_CBRT on Linux, I get the exact same failure! So it seems our own version of cbrt() is broken wrt our own regression tests :-( Must be that nobody else (at least on i386) uses that code. The mingw version does appear to work, but it's noticably more complex, see http://cvs.sourceforge.net/viewcvs.py/mingw/runtime/mingwex/math/cbrt.c? rev=1.1&view=auto. It's placed in the public domain, so we should be able to use it if we want to (http://cvs.sourceforge.net/viewcvs.py/mingw/runtime/DISCLAIMER?rev=1.1&; view=auto). What do you think is best - try to adapt that version, or update our regression tests outputs to accept the output from our current code? //Magnus ---------------------------(end of broadcast)--------------------------- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
