1 files changed, 68 insertions, 0 deletions
diff --git a/third_party/xsimd/include/xsimd/xsimd.hpp b/third_party/xsimd/include/xsimd/xsimd.hpp
new file mode 100644
index 0000000000..8d76a5f91d
--- /dev/null
+++ b/third_party/xsimd/include/xsimd/xsimd.hpp
@@ -0,0 +1,68 @@
+/***************************************************************************
+ * Copyright (c) Johan Mabille, Sylvain Corlay, Wolf Vollprecht and         *
+ * Martin Renou                                                             *
+ * Copyright (c) QuantStack                                                 *
+ * Copyright (c) Serge Guelton                                              *
+ *                                                                          *
+ * Distributed under the terms of the BSD 3-Clause License.                 *
+ *                                                                          *
+ * The full license is in the file LICENSE, distributed with this software. *
+ ****************************************************************************/
+
+#ifndef XSIMD_HPP
+#define XSIMD_HPP
+
+#if defined(__has_cpp_attribute)
+// if this check passes, then the compiler supports feature test macros
+#if __has_cpp_attribute(nodiscard) >= 201603L
+// if this check passes, then the compiler supports [[nodiscard]] without a message
+#define XSIMD_NO_DISCARD [[nodiscard]]
+#endif
+#endif
+
+#if !defined(XSIMD_NO_DISCARD) && __cplusplus >= 201703L
+// this means that the previous tests failed, but we are using C++17 or higher
+#define XSIMD_NO_DISCARD [[nodiscard]]
+#endif
+
+#if !defined(XSIMD_NO_DISCARD) && (defined(__GNUC__) || defined(__clang__))
+// this means that the previous checks failed, but we are using GCC or Clang
+#define XSIMD_NO_DISCARD __attribute__((warn_unused_result))
+#endif
+
+#if !defined(XSIMD_NO_DISCARD)
+// this means that all the previous checks failed, so we fallback to doing nothing
+#define XSIMD_NO_DISCARD
+#endif
+
+#ifdef __cpp_if_constexpr
+// this means that the compiler supports the `if constexpr` construct
+#define XSIMD_IF_CONSTEXPR if constexpr
+#endif
+
+#if !defined(XSIMD_IF_CONSTEXPR) && __cplusplus >= 201703L
+// this means that the previous test failed, but we are using C++17 or higher
+#define XSIMD_IF_CONSTEXPR if constexpr
+#endif
+
+#if !defined(XSIMD_IF_CONSTEXPR)
+// this means that all the previous checks failed, so we fallback to a normal `if`
+#define XSIMD_IF_CONSTEXPR if
+#endif
+
+#include "config/xsimd_config.hpp"
+
+#include "arch/xsimd_scalar.hpp"
+#include "memory/xsimd_aligned_allocator.hpp"
+
+#if defined(XSIMD_NO_SUPPORTED_ARCHITECTURE)
+// to type definition or anything appart from scalar definition and aligned allocator
+#else
+#include "types/xsimd_batch.hpp"
+#include "types/xsimd_batch_constant.hpp"
+#include "types/xsimd_traits.hpp"
+
+// This include must come last
+#include "types/xsimd_api.hpp"
+#endif
+#endif