libstdc++-v3/ChangeLog:
* include/bits/simd_mask_reductions.h: New file.
Signed-off-by: Matthias Kretz <[email protected]>
---
.../include/bits/simd_mask_reductions.h | 94 +++++++++++++++++++
1 file changed, 94 insertions(+)
create mode 100644 libstdc++-v3/include/bits/simd_mask_reductions.h
--
──────────────────────────────────────────────────────────────────────────
Dr. Matthias Kretz https://mattkretz.github.io
GSI Helmholtz Center for Heavy Ion Research https://gsi.de
std::simd
──────────────────────────────────────────────────────────────────────────diff --git a/libstdc++-v3/include/bits/simd_mask_reductions.h b/libstdc++-v3/include/bits/simd_mask_reductions.h
new file mode 100644
index 00000000000..d554f8a2c6b
--- /dev/null
+++ b/libstdc++-v3/include/bits/simd_mask_reductions.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later WITH GCC-exception-3.1 */
+/* Copyright © 2025 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+ * Matthias Kretz <[email protected]>
+ */
+
+#ifndef _GLIBCXX_SIMD_MASK_REDUCTIONS_H
+#define _GLIBCXX_SIMD_MASK_REDUCTIONS_H 1
+
+#ifdef _GLIBCXX_SYSHDR
+#pragma GCC system_header
+#endif
+
+#if __cplusplus >= 202400L
+
+#include "simd_mask.h"
+
+// psabi warnings are bogus because the ABI of the internal types never leaks into user code
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpsabi"
+
+// [simd.mask.reductions] -----------------------------------------------------
+namespace std::simd
+{
+ template <size_t _Bytes, typename _Ap>
+ [[__gnu__::__always_inline__]]
+ constexpr bool
+ all_of(const basic_mask<_Bytes, _Ap>& __k) noexcept
+ { return __k._M_all_of(); }
+
+ template <size_t _Bytes, typename _Ap>
+ [[__gnu__::__always_inline__]]
+ constexpr bool
+ any_of(const basic_mask<_Bytes, _Ap>& __k) noexcept
+ { return __k._M_any_of(); }
+
+ template <size_t _Bytes, typename _Ap>
+ [[__gnu__::__always_inline__]]
+ constexpr bool
+ none_of(const basic_mask<_Bytes, _Ap>& __k) noexcept
+ { return __k._M_none_of(); }
+
+ template <size_t _Bytes, typename _Ap>
+ [[__gnu__::__always_inline__]]
+ constexpr __simd_size_type
+ reduce_count(const basic_mask<_Bytes, _Ap>& __k) noexcept
+ {
+ if constexpr (_Ap::_S_size == 1)
+ return +__k[0];
+ else if constexpr (__flags_test(_Ap::_S_variant, _AbiVariant::_VecMask))
+ return -reduce(-__k);
+ else
+ return __k._M_reduce_count();
+ }
+
+ template <size_t _Bytes, typename _Ap>
+ [[__gnu__::__always_inline__]]
+ constexpr __simd_size_type
+ reduce_min_index(const basic_mask<_Bytes, _Ap>& __k)
+ { return __k._M_reduce_min_index(); }
+
+ template <size_t _Bytes, typename _Ap>
+ [[__gnu__::__always_inline__]]
+ constexpr __simd_size_type
+ reduce_max_index(const basic_mask<_Bytes, _Ap>& __k)
+ { return __k._M_reduce_max_index(); }
+
+ constexpr bool
+ all_of(same_as<bool> auto __x) noexcept
+ { return __x; }
+
+ constexpr bool
+ any_of(same_as<bool> auto __x) noexcept
+ { return __x; }
+
+ constexpr bool
+ none_of(same_as<bool> auto __x) noexcept
+ { return !__x; }
+
+ constexpr __simd_size_type
+ reduce_count(same_as<bool> auto __x) noexcept
+ { return __x; }
+
+ constexpr __simd_size_type
+ reduce_min_index(same_as<bool> auto __x)
+ { return 0; }
+
+ constexpr __simd_size_type
+ reduce_max_index(same_as<bool> auto __x)
+ { return 0; }
+}
+
+#pragma GCC diagnostic pop
+#endif // C++26
+#endif // _GLIBCXX_SIMD_MASK_REDUCTIONS_H
