[llvm] [Offload] Add framework for math conformance tests (PR #149242)

[Joseph Huber via llvm-commits]

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@@ -0,0 +1,121 @@
+#pragma once
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jhuber6 wrote:

LLVM header and `#ifndef` guards per the LLVM style.

https://github.com/llvm/llvm-project/pull/149242