chore: import upstream snapshot with attribution

python/paddle/apy/matmul_pass/matmul/math_function.h

@@ -0,0 +1,39 @@
+// Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
+//
+// 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
+
+#ifdef __NVCC__
+#include <cuda.h>
+#include <cuda_bf16.h>
+#include <cuda_fp16.h>
+#endif
+#ifdef __HIPCC__
+#include <hip/hip_bfloat16.h>
+#include <hip/hip_fp16.h>
+#include <hip/hip_runtime.h>
+#endif
+
+namespace ap {
+
+template <typename T>
+__forceinline__ __host__ __device__ T ComputePow(T base, T exponent) {
+  T res = (exponent == static_cast<T>(2))
+              ? (base * base)
+              : ((exponent == static_cast<T>(3)) ? (base * base * base)
+                                                 : (powf(base, exponent)));
+  return res;
+}
+
+}  // namespace ap