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2025-06-12 7b72ac13a83764a662159d4a49b7fffb90476ecb

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/**
 * @license
 * Copyright 2019 Google LLC. 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 * as tf from '../index';
import { ALL_ENVS, describeWithFlags } from '../jasmine_util';
import { EPSILON_FLOAT16, EPSILON_FLOAT32 } from './backend';
describeWithFlags('epsilon', ALL_ENVS, () => {
    it('Epsilon is a function of float precision', () => {
        const epsilonValue = tf.backend().floatPrecision() === 32 ?
            EPSILON_FLOAT32 :
            EPSILON_FLOAT16;
        expect(tf.backend().epsilon()).toBe(epsilonValue);
    });
    it('abs(epsilon) > 0', async () => {
        expect(await tf.abs(tf.backend().epsilon()).array()).toBeGreaterThan(0);
    });
});
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