September 08, 2019
https://issues.dlang.org/show_bug.cgi?id=20202

          Issue ID: 20202
           Summary: Make std.math.signbit work for floating point numbers
                    in CTFE
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: phobos
          Assignee: nobody@puremagic.com
          Reporter: n8sh.secondary@hotmail.com

This is a subissue of Issue #17007.

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