/* Copyright 2024 The JAX Authors.

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.
==============================================================================*/

#ifndef JAXLIB_GPU_CHOLESKY_UPDATE_KERNEL_H_
#define JAXLIB_GPU_CHOLESKY_UPDATE_KERNEL_H_

#include <cstddef>
#include <cstdint>
#include <string>

#include "jaxlib/gpu/vendor.h"
#include "xla/service/custom_call_status.h"


namespace jax {
namespace JAX_GPU_NAMESPACE {

enum LinalgType {
  F32 = 0,
  F64 = 1,
};

struct CholeskyUpdateDescriptor {
  LinalgType linalg_type;
  std::int64_t matrix_size;  // leading dim (N) for a square (NxN)matrix
};

void LaunchCholeskyUpdateKernel(
    gpuStream_t stream, void** buffers, CholeskyUpdateDescriptor descriptor);

void CholeskyUpdate(gpuStream_t stream, void** buffers,
                    const char* opaque, size_t opaque_len,
                    XlaCustomCallStatus* status);

}  // namespace JAX_GPU_NAMESPACE
}  // namespace jax

#endif  // JAXLIB_GPU_CHOLESKY_UPDATE_KERNEL_H_