[Bug math/19189] New: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception

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

https://sourceware.org/bugzilla/show_bug.cgi?id=19189

            Bug ID: 19189
           Summary: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
           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: ---

The ldbl-128 version of log1pl raises a spurious "invalid" exception for a
-qNaN argument.  E.g., for mips64:

testing long double (without inline functions)
Failure: log1p (-qNaN): Exception "Invalid operation" set
Failure: log1p_downward (-qNaN): Exception "Invalid operation" set
Failure: log1p_towardzero (-qNaN): Exception "Invalid operation" set
Failure: log1p_upward (-qNaN): Exception "Invalid operation" set

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