This is the mail archive of the glibc-bugs@sourceware.org mailing list for the glibc project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[Bug math/14331] New: csqrt inaccuracy on internal underflows with subnormal argument


http://sourceware.org/bugzilla/show_bug.cgi?id=14331

             Bug #: 14331
           Summary: csqrt inaccuracy on internal underflows with subnormal
                    argument
           Product: glibc
           Version: 2.16
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
        AssignedTo: unassigned@sourceware.org
        ReportedBy: jsm28@gcc.gnu.org
    Classification: Unclassified


Some internal underflows can cause substantial inaccuracy in the results of
csqrt.  Specifically, on x86_64, csqrt (0x1p-1074i) returns zero and csqrt
(0x1p-500 + 0x1p-1074i) returns an imaginary part of zero (should be
4.469444793151709302716387622440056066334e-249).

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]