Add softmax function (#93)

* Add softmax function

* Add softmax unittest

* Add Softmax docs

* Add function directory

* Add comment for FD_VISIT_ALL_TYPES macro

tests/function/test_transpose.cc

@@ -0,0 +1,61 @@
+// Copyright (c) 2022 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.
+
+#include <numeric>
+#include <vector>
+#include "fastdeploy/core/fd_tensor.h"
+#include "fastdeploy/function/transpose.h"
+
+#include "glog/logging.h"
+#include "gtest/gtest.h"
+#include "gtest_utils.h"
+
+namespace fastdeploy {
+#ifdef ENABLE_FDTENSOR_FUNC
+TEST(fastdeploy, transpose_2d) {
+  FDTensor input, output;
+  CheckShape check_shape;
+  CheckData check_data;
+
+  std::vector<float> inputs = {2, 4, 3, 7, 1, 5};
+  std::vector<float> expected_result = {2, 7, 4, 1, 3, 5};
+  input.SetExternalData({2, 3}, FDDataType::FP32, inputs.data());
+
+  Transpose(input, &output, {1, 0});
+  check_shape(output.shape, {3, 2});
+  check_data(reinterpret_cast<const float*>(output.Data()),
+             expected_result.data(), expected_result.size());
+}
+
+TEST(fastdeploy, transpose_5d) {
+  FDTensor input, output;
+  CheckShape check_shape;
+  CheckData check_data;
+
+  std::vector<int64_t> input_shape = {2, 1, 3, 1, 2};
+  auto total_size = std::accumulate(input_shape.begin(), input_shape.end(), 1,
+                                    std::multiplies<int64_t>());
+  std::vector<int> inputs(total_size, 1);
+  std::iota(inputs.begin(), inputs.end(), 1);
+  std::vector<int> expected_result = {1, 3, 5, 2, 4, 6, 7, 9, 11, 8, 10, 12};
+  input.SetExternalData(input_shape, FDDataType::INT32, inputs.data());
+
+  Transpose(input, &output, {0, 1, 4, 3, 2});
+  check_shape(output.shape, {2, 1, 2, 1, 3});
+  check_data(reinterpret_cast<const int*>(output.Data()),
+             expected_result.data(), expected_result.size());
+}
+
+#endif
+}  // namespace fastdeploy