On Sat, Apr 9, 2011 at 6:05 PM, Christopher Faylor wrote: > On Sat, Apr 09, 2011 at 08:20:13AM -0700, Necro Cow wrote: >>Hello. >> >>I have recently discovered that the cygwin version I am using (1.7.7) >>doesn't support many long-double function, like sqrtl, modfl, frexpl, >>etc. >> >>I have been reading on newlib's website, sourceware.org/newlib, that >>as of version 1.18.0, such long-double functions are now supported. >>(http://sourceware.org/ml/newlib/2009/msg01135.html)
further the newlib announce says: * long double math routines added for platforms where LDBL == DBL so in reality you gain no additional performance on the double. >> >>What I can't seem to find out is, what version of newlib is in the >>newest release of cygwin, and if it has this better support for >>long-double functions. > > Cygwin uses whatever is in the newlib tree as of its release date. That > means that since Cygwin 1.7.7-1 was released in August 2010* it would > incorporate any newlib changes from 2009. That doesn't mean that we would > export every single thing that newlib provides, however. If functionality > is missing that means that no one has taken the time to get it working in > the Cygwin DLL. > > cgf > > *http://sourceware.org/ml/cygwin-announce/2010-08/msg00035.html > on 1.7.8 most of the missing "double" function were added http://sourceware.org/ml/cygwin-announce/2011-03/msg00000.html I thought to implement also the long double but as doubles are 64 bit and long doubles are just 80 bits on windows, I found the effort not worth. Marco -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
