matrix.h

/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.

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 __PADDLE_CAPI_MATRIX_H__
#define __PADDLE_CAPI_MATRIX_H__

#include <stdint.h>
#include "config.h"
#include "error.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * Matrix functions. Return will be a paddle_error type.
 */
typedef void* paddle_matrix;

/**
 * @brief paddle_matrix_create Create a dense matrix
 * @param height matrix height.
 * @param width matrix width
 * @param useGpu use GPU of not
 * @return Matrix handler
 */
PD_API paddle_matrix paddle_matrix_create(uint64_t height,
                                          uint64_t width,
                                          bool useGpu);

/**
 * @brief paddle_matrix_destroy Destroy a matrix.
 * @param mat
 * @return paddle_error
 */
PD_API paddle_error paddle_matrix_destroy(paddle_matrix mat);

/**
 * @brief paddle_matrix_set_row Set a row to matrix.
 * @param mat Target Matrix
 * @param rowID Index of row
 * @param rowArray Row data.
 * @return paddle_error
 */
PD_API paddle_error paddle_matrix_set_row(paddle_matrix mat,
                                          uint64_t rowID,
                                          pd_real* rowArray);

/**
 * @brief PDMatGetRow Get raw row buffer from matrix
 * @param [in] mat Target matrix
 * @param [in] rowID Index of row.
 * @param [out] rawRowBuffer Row Buffer
 * @return paddle_error
 */
PD_API paddle_error paddle_matrix_get_row(paddle_matrix mat,
                                          uint64_t rowID,
                                          pd_real** rawRowBuffer);

/**
 * @brief PDMatCreateNone Create None Matrix
 * @return
 */
PD_API paddle_matrix paddle_matrix_create_none();

/**
 * @brief PDMatGetShape get the shape of matrix
 * @param mat target matrix
 * @param height The height of matrix
 * @param width The width of matrix
 * @return paddle_error
 */
PD_API paddle_error paddle_matrix_get_shape(paddle_matrix mat,
                                            uint64_t* height,
                                            uint64_t* width);

#ifdef __cplusplus
}
#endif
#endif