chore: import upstream snapshot with attribution

2026-07-13 13:36:55 +08:00
commit c8a779b1bb
1887 changed files with 3245738 additions and 0 deletions
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+/*
+ * SPDX-FileCopyrightText: Copyright (c) 1993-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+
+namespace sample
+{
+
+//! Implements "Brain Floating Point": like an IEEE FP32,
+//! but the significand is only 7 bits instead of 23 bits.
+class BFloat16
+{
+public:
+    BFloat16()
+        : mRep(0)
+    {
+    }
+
+    // Rounds to even if there is a tie.
+    BFloat16(float x);
+
+    operator float() const;
+
+private:
+    //! Value stored in BFloat16 representation.
+    uint16_t mRep;
+};
+BFloat16 operator+(BFloat16 x, BFloat16 y);
+
+} // namespace sample