[Bug math/15285] New: Bessel function spurious overflows for ldbl-128 / ldbl-128ibm

["jsm28 at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=15285

             Bug #: 15285
           Summary: Bessel function spurious overflows for ldbl-128 /
                    ldbl-128ibm
           Product: glibc
           Version: 2.17
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
        AssignedTo: unassigned@sourceware.org
        ReportedBy: jsm28@gcc.gnu.org
    Classification: Unclassified


The ldbl-128 / ldbl-128ibm implementations of Bessel function do not check if
the argument can be doubled before doing so, resulting in spurious overflows
for arguments above LDBL_MAX / 2.0L.  This is reported for ldbl-128 at
http://sourceware.org/ml/libc-alpha/2013-03/msg00434.html and the same applies
for ldbl-128ibm (tested for y1l (0x1p1023L) on powerpc64).

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