[libcxx-commits] [libcxx] [libcxx] adds ranges::fold_left_with_iter and ranges::fold_left (PR #75259)

[via libcxx-commits]

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@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_TEST_FOLD_GAUSSIAN_SUM_H
+#define LIBCXX_TEST_FOLD_GAUSSIAN_SUM_H
+
+#include <vector>
+
+template <class T>
+constexpr auto gaussian_sum(std::vector<T> const& input) {
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EricWF wrote:

I'm a bit uncomfortable by the amount of assumptions this function makes about its inputs in order to produce correct output.

https://github.com/llvm/llvm-project/pull/75259