Add linspace

fastdeploy/function/linspace.h

@@ -0,0 +1,33 @@
+// 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.
+
+#pragma once
+
+#include "fastdeploy/core/fd_tensor.h"
+
+namespace fastdeploy {
+namespace function {
+
+/** Return fixed number of evenly spaced values within a given interval.
+    @param start The input start is start variable of range.
+    @param end The input stop is start variable of range.
+    @param num The input num is given num of the sequence.
+    @param out The output tensor which stores the result.
+    @param dtype The data type of output tensor, default to float32.
+*/
+FASTDEPLOY_DECL void Linspace(double start, double end, int num, FDTensor* out,
+                              FDDataType dtype = FDDataType::FP32);
+
+}  // namespace function
+}  // namespace fastdeploy