// coding=utf-8
//
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#pragma once

#include "disco.h"

#include <cuda_runtime.h>
#include <c10/cuda/CUDAStream.h>

#define CHECK_CUDA_TENSOR(x) TORCH_CHECK(x.device().is_cuda(), #x " must be a CUDA tensor")
#define CHECK_CUDA_INPUT_TENSOR(x) CHECK_CUDA_TENSOR(x); CHECK_CONTIGUOUS_TENSOR(x)

#define DIV_UP(a,b) (((a)+((b)-1))/(b))

#define MIN_THREADS (64)
#define ELXTH_MAX   (32)

// forward kernel
torch::Tensor disco_cuda_fwd(torch::Tensor inp,
                             torch::Tensor roff_idx,
                             torch::Tensor ker_idx,
                             torch::Tensor row_idx,
                             torch::Tensor col_idx,
                             torch::Tensor val,
                             int64_t K,
                             int64_t Ho,
                             int64_t Wo);

// backward kernel
torch::Tensor disco_cuda_bwd(torch::Tensor inp,
                             torch::Tensor roff_idx,
                             torch::Tensor ker_idx,
                             torch::Tensor row_idx,
                             torch::Tensor col_idx,
                             torch::Tensor val,
                             int64_t K,
                             int64_t Ho,
                             int64_t Wo);
			     