[Bug math/19201] New: dbl-64 remainder incorrect sign of zero result

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

https://sourceware.org/bugzilla/show_bug.cgi?id=19201

            Bug ID: 19201
           Summary: dbl-64 remainder incorrect sign of zero result
           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: ---

For some large arguments, the dbl-64 implementation of remainder gives zero
results with the wrong sign, e.g.:

Failure: Test: remainder (-max_value, max_value)
Result:
 is:          0.0000000000000000e+00   0x0.0000000000000p+0
 should be:  -0.0000000000000000e+00  -0x0.0000000000000p+0
 difference:  0.0000000000000000e+00   0x0.0000000000000p+0
 ulp       :  0.0000
 max.ulp   :  0.0000

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