RVV optimized binaryop, with fp16 support (#3097)

src/layer/riscv/binaryop_riscv.h

@@ -0,0 +1,44 @@
+// Xavier Hsinyuan is pleased to support the open source community by making
+// ncnn available.
+//
+// Copyright (C) 2021 Xavier Hsinyuan <thelastlinex@hotmail.com>. All rights
+// reserved.
+//
+// Licensed under the BSD 3-Clause License (the "License"); you may not use this
+// file except in compliance with the License. You may obtain a copy of the
+// License at
+//
+// https://opensource.org/licenses/BSD-3-Clause
+//
+// 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.
+#ifndef LAYER_BINARYOP_RISCV_H
+#define LAYER_BINARYOP_RISCV_H
+
+#include "binaryop.h"
+namespace ncnn {
+
+class BinaryOp_riscv : virtual public BinaryOp
+{
+public:
+    BinaryOp_riscv();
+
+    virtual int forward(const std::vector<Mat>& bottom_blobs,
+                        std::vector<Mat>& top_blobs, const Option& opt) const;
+
+    virtual int forward_inplace(Mat& bottom_top_blob, const Option& opt) const;
+
+protected:
+#if __riscv_vector && __riscv_zfh
+    int forward_inplace_fp16sa(Mat& bottom_top_blob, const Option& opt) const;
+
+    int forward_fp16sa(const std::vector<Mat> &bottom_blobs,
+                       std::vector<Mat> &top_blobs, const Option &opt) const;
+#endif
+};
+} // namespace ncnn
+
+#endif // LAYER_BINARYOP_RISCV_H