[libcxx] [llvm] [libc++][math][c++17] P0226R1 - Mathematical Special Functions: infra + `std::assoc_laguerre` (PR #205649)

[via llvm-commits]

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@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: std-at-least-c++17
+
+// The functions carry availability markup, so referencing them fails to compile against a
+// back-deployment target whose libc++ predates them.
+// XFAIL: availability-mathematical_special_functions-missing
+
+// Check that functions are marked noexcept
+
+#include <cmath>
+
+#include "test_macros.h"
+
+void test() {
+  // assoc_laguerre
+  ASSERT_NOEXCEPT(std::assoc_laguerre(0, 0, 0.0f));
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PaulXiCao wrote:

done.

https://github.com/llvm/llvm-project/pull/205649