# Copyright 2020 Huawei Technologies Co., Ltd
#
# 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.

"""operator dsl function: round"""
import akg.topi
import akg.tvm
from akg.utils import validation_check as vc_util

@vc_util.check_input_type(akg.tvm.tensor.Tensor)
def round(data):
    """
    Round elements of x to nearest integer.

    Args:
        data (tvm.tensor.Tensor): Tensor of type float16, float32, int8, unit8, int32.

    Returns:
        tvm.tensor.Tensor of same type and shape as data.
    """
    vc_util.check_shape(data.shape)
    
    in_type = data.dtype
    if in_type == 'float16':
        data = akg.topi.cast(data, 'float32')

    output = akg.topi.round(data)
    if in_type == 'float16':
        output = akg.topi.cast(output, 'float16')


    return output