llround and llroundf are available in newlib but not exported in cygwin. http://www.cygwin.com/ml/cygwin/2010-10/msg00351.html
simple path attached to solve the problem. changelog: * winsup/cygwin/cygwin.din : added llround and llroundf Regards Marco
--- src/winsup/cygwin/cygwin.din 2010-10-08 20:25:00.875000000 +0200 +++ src_new/winsup/cygwin/cygwin.din 2010-10-18 14:31:36.453125000 +0200 @@ -960,6 +960,8 @@ llrint = _f_llrint NOSIGFE llrintf = _f_llrintf NOSIGFE llrintl = _f_llrintl NOSIGFE +llround NOSIGFE +llroundf NOSIGFE __locale_mb_cur_max NOSIGFE localeconv NOSIGFE _localeconv = localeconv NOSIGFE