-----Original-Nachricht----- Betreff: Re: float behaivior on ARMv8-A Datum: 2016-05-29T10:55:10+0200 Von: "Andrew Haley [via gcc]" <ml-node+s1065356n1268020h87@xxxxxxxxxxxxx> An: "N30dG" <christian.dreihsig@xxxxxxxxxxx> On 28/05/16 08:37, N30dG wrote: > I was able to locate the Problem(s). > And I think this maybe could be a gcc-bug. It seem's that sin() and sqrt() > works in less precision when compiled for AARCH64 (no ffast-math or other > "unsafe" float-options enabled). I've worked that around by using sinl() and > sqrtl() and now everythink work's like expected. I'm note sure if this is a > bug or a normal behavior when compiling for different architectures. > > If this could be a bug and you need additional information feel free to > write. Sure. If there's anything we can do to zoom in on the problem that would help. Significant inaccuracy in trig functions probably is a bug. Having said that, Standard C does not guarantee any particular accuracy for these funtions. Also, this is probably not a bug in GCC itself but in whatever C library you're using. Andrew. Okay pls give me, some Day's. I don't have the Time by now. But next Week I have holidays and then I try to reproduce the problem in a small test-programm an provide you all the Information's needed. Greetings Christian ------------------------------------------------------------------------ If you reply to this email, your message will be added to the discussion below: http://gcc.1065356.n5.nabble.com/float-behaivior-on-ARMv8-A-tp1259502p1268020.html <http://gcc.1065356.n5.nabble.com/float-behaivior-on-ARMv8-A-tp1259502p1268020.html> To unsubscribe from float behaivior on ARMv8-A, click here <http://gcc.1065356.n5.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=1259502&code=Y2hyaXN0aWFuLmRyZWloc2lnQHQtb25saW5lLmRlfDEyNTk1MDJ8LTE0MDcwMTQ3NzU=> . NAML <http://gcc.1065356.n5.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> <div style=\"border:0;border-bottom:1px solid black;width:100%;\"> Gesendet mit Telekom Mail <https://t-online.de/email-kostenlos> - kostenlos und sicher für alle! -- View this message in context: http://gcc.1065356.n5.nabble.com/float-behaivior-on-ARMv8-A-tp1259502p1269020.html Sent from the gcc - Help mailing list archive at Nabble.com.
