[libcxx-commits] [libcxx] [libc++] Implement ranges::iota (PR #68494)

[James E T Smith via libcxx-commits]

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@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+// Testing std::ranges::iota
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <numeric>
+#include <algorithm>
+#include <array>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "almost_satisfies_types.h"
+
+//
+// Testing constraints
+//
+
+// Concepts to check different overloads of std::ranges::iota
+template <class Iter = int*, class Sent = int*, class Value = int>
+concept HasIotaIter = requires(Iter&& iter, Sent&& sent, Value&& val) {
+  std::ranges::iota(std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<Value>(val));
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jamesETsmith wrote:

I'm probably missing something obvious, but can you tell me why you'd like to add it? 

https://github.com/llvm/llvm-project/pull/68494