From 8795ffb03c1bb84a0d93e4ece153ceaa86118594 Mon Sep 17 00:00:00 2001
From: Georgios Pinitas <georgios.pinitas@arm.com>
Date: Fri, 1 Dec 2017 16:13:40 +0000
Subject: COMPMID-700: Adds CPPPermute function

Change-Id: I8f6adc67f6e6157710fca540f217d70e6f297217
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/111721
Tested-by: BSG Visual Compute Jenkins server to access repositories on http://mpd-gerrit.cambridge.arm.com <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
---
 arm_compute/core/utils/misc/utility.h | 72 +++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 arm_compute/core/utils/misc/utility.h

(limited to 'arm_compute/core/utils/misc')

diff --git a/arm_compute/core/utils/misc/utility.h b/arm_compute/core/utils/misc/utility.h
new file mode 100644
index 0000000000..898d0cdea8
--- /dev/null
+++ b/arm_compute/core/utils/misc/utility.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_MISC_UTILITY_H__
+#define __ARM_COMPUTE_MISC_UTILITY_H__
+
+#include <array>
+
+namespace arm_compute
+{
+namespace utility
+{
+/** @cond */
+template <std::size_t...>
+struct index_sequence
+{
+};
+
+template <std::size_t N, std::size_t... S>
+struct index_sequence_generator : index_sequence_generator < N - 1, N - 1, S... >
+{
+};
+
+template <std::size_t... S>
+struct index_sequence_generator<0u, S...> : index_sequence<S...>
+{
+    using type = index_sequence<S...>;
+};
+
+template <std::size_t N>
+using index_sequence_t = typename index_sequence_generator<N>::type;
+/** @endcond */
+
+namespace detail
+{
+template <std::size_t... S,
+          typename Iterator,
+          typename T = std::array<typename std::iterator_traits<Iterator>::value_type, sizeof...(S)>>
+T make_array(Iterator first, index_sequence<S...>)
+{
+    return T{ { first[S]... } };
+}
+} // namespace detail
+
+template <std::size_t N, typename Iterator>
+std::array<typename std::iterator_traits<Iterator>::value_type, N> make_array(Iterator first, Iterator last)
+{
+    return detail::make_array(first, index_sequence_t<N> {});
+}
+} // namespace misc
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_MISC_UTILITY_H__ */
-- 
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