[Bug 54826] New: Add support for sign() intrinsic

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54826

Bug ID: 54826
           Summary: Add support for sign() intrinsic
           Product: vkd3d
           Version: 1.7
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: hlsl
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 74329
  --> https://bugs.winehq.org/attachment.cgi?id=74329
sign() unit tests

This is used by MojoShader for the SGN and MOVA instructions.

I don't have a real-world test, but for something like this I imagine the unit
tests would be enough to work with, so I've attached them here.