# 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
#
# Ungreater 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.
# ============================================================================

"""equal_impl"""
from mindspore.ops.composite import base
from mindspore.ops import functional as F

# greater is a metafuncgraph object which will determine if two objects are greater according to input type
# using ".register" decorator
greater = base.MultitypeFuncGraph("greater")


@greater.register("Number", "Number")
def _greater_scala(x, y):
    """
    Determine whether two numbers are greater.

    Args:
       x(Number): Number.
       y(Number): Number.

    Returns:
       bool, if x > y return true, x <= y return false.
   """
    return F.scalar_gt(x, y)

@greater.register("Tensor", "Number")
@greater.register("Number", "Tensor")
@greater.register("Tensor", "Tensor")
def _greater_tensor(x, y):
    """
    Determine whether two tensor are greater by element.

    Args:
       x(Tensor): Tensor.
       y(Tensor): Tensor.

    Returns:
       tensor, return operation of x and y by P.Greater
   """
    return F.tensor_gt(x, y)
