# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
#
# 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 unittest

import numpy as np
from paddle_bfloat import bfloat16


class TestBF16DataType(unittest.TestCase):
    def test_matmul(self):
        a_bf16 = np.random.random((6, 7)).astype(bfloat16)
        b_bf16 = np.random.random((7, 8)).astype(bfloat16)
        c_bf16 = np.matmul(a_bf16, b_bf16)

        a_fp32 = a_bf16.astype(np.float32)
        b_fp32 = b_bf16.astype(np.float32)
        c_fp32 = np.matmul(a_fp32, b_fp32)

        np.testing.assert_allclose(c_bf16, c_fp32, rtol=1e-05)


if __name__ == "__main__":
    unittest.main()
