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pcdet/ops/pointnet2/pointnet2_batch/src/group_points_gpu.h

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+#ifndef _GROUP_POINTS_GPU_H
+#define _GROUP_POINTS_GPU_H
+
+#include <torch/serialize/tensor.h>
+#include <cuda.h>
+#include <cuda_runtime_api.h>
+#include <vector>
+
+
+int group_points_wrapper_fast(int b, int c, int n, int npoints, int nsample, 
+    at::Tensor points_tensor, at::Tensor idx_tensor, at::Tensor out_tensor);
+
+void group_points_kernel_launcher_fast(int b, int c, int n, int npoints, int nsample, 
+    const float *points, const int *idx, float *out);
+
+int group_points_grad_wrapper_fast(int b, int c, int n, int npoints, int nsample, 
+    at::Tensor grad_out_tensor, at::Tensor idx_tensor, at::Tensor grad_points_tensor);
+
+void group_points_grad_kernel_launcher_fast(int b, int c, int n, int npoints, int nsample, 
+    const float *grad_out, const int *idx, float *grad_points);
+
+#endif