[Bug math/19076] New: [ldbl-128ibm] log1pl (-1) wrong sign of infinity

[jsm28 at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=19076

            Bug ID: 19076
           Summary: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
           Product: glibc
           Version: 2.22
            Status: NEW
          Severity: normal
          Priority: P2
         Component: math
          Assignee: unassigned at sourceware dot org
          Reporter: jsm28 at gcc dot gnu.org
  Target Milestone: ---
            Target: powerpc*-*-*

The ldbl-128ibm implementation of log1pl produces an infinity with the wrong
sign for log1pl (-1) in FE_DOWNWARD_MODE:

infinity has wrong sign.
Failure: Test: log1p_downward (-1)
Result:
 is:          inf   inf
 should be:  -inf  -inf

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