# SPDX-License-Identifier: Apache-2.0

import numpy as np  # type: ignore

import onnx
from ..base import Base
from . import expect


class Acosh(Base):

    @staticmethod
    def export() -> None:
        node = onnx.helper.make_node(
            'Acosh',
            inputs=['x'],
            outputs=['y'],
        )

        x = np.array([10, np.e, 1]).astype(np.float32)
        y = np.arccosh(x)  # expected output [2.99322295,  1.65745449,  0.]
        expect(node, inputs=[x], outputs=[y],
               name='test_acosh_example')

        x = np.random.uniform(1.0, 10.0, (3, 4, 5)).astype(np.float32)
        y = np.arccosh(x)
        expect(node, inputs=[x], outputs=[y],
               name='test_acosh')