# Copyright Commonwealth of Australia, Bureau of Meteorology 2024.
#
# 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.


import torch


class RMSELoss(torch.nn.MSELoss):
    def __init__(self) -> None:
        super().__init__()
        self.MSELoss = torch.nn.MSELoss()

    def forward(self, output, target):
        mseloss = self.MSELoss(output, target)
        return torch.sqrt(mseloss)
