[Functions] Add quantile function (#700)

* Add sort function

* Add isfinite function

* upgrade isinf isnan

* Add Scalar to FDTensor

* Add floor, ceil function

* add cast functions

* Update out_tmp

* Update quantile

* add gather scatter along axis

* finish quantile function

* Add quantile unittest

* refresh code style for test source code

* Add comments

* Add full function

* Add scalar to fd tensor

* Add full unittest

* Add functions headers

* move fdtensor operators to fastdeploy namespace

tests/function/test_cast.cc

@@ -0,0 +1,52 @@
+// 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 "fastdeploy/core/fd_tensor.h"
+#include "fastdeploy/function/cast.h"
+#include "glog/logging.h"
+#include "gtest_utils.h"
+#include "gtest/gtest.h"
+#include <array>
+#include <vector>
+
+namespace fastdeploy {
+namespace function {
+
+std::vector<float> CreateTestData() {
+  // Shape: [2, 3, 4]
+  std::vector<float> x_data = {
+      1.8428625,  0.6461913, 0.13740455,  0.11430702, 0.659926,  0.535816,
+      0.7429162,  0.8456049, -1.21228176, 0.29970083, 0.8621713, 0.40894133,
+      0.12684688, 2.1566195, -9.42884097, 20.8476526, 0.2458633, 0.669046,
+      0.87888306, 0.6762589, 0.666453,    0.32523027, 0.4139388, 0.8341406};
+  return x_data;
+}
+
+TEST(fastdeploy, cast) {
+  CheckShape check_shape;
+  CheckData check_data;
+  FDTensor x, y;
+  auto test_data = CreateTestData();
+  x.SetExternalData({2, 3, 4}, FDDataType::FP32, test_data.data());
+
+  Cast(x, &y, FDDataType::INT32);
+  std::vector<int> result = {1, 0, 0,  0,  0, 0, 0, 0, -1, 0, 0, 0,
+                             0, 2, -9, 20, 0, 0, 0, 0, 0,  0, 0, 0};
+  check_shape(y.shape, {2, 3, 4});
+  check_data(reinterpret_cast<const int*>(y.Data()), result.data(),
+             result.size());
+}
+
+}  // namespace function
+}  // namespace fastdeploy