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2025-06-12 7b72ac13a83764a662159d4a49b7fffb90476ecb

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/**
 * @license
 * Copyright 2020 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 { util } from '@tensorflow/tfjs-core';
export function rangeImpl(start, stop, step, dtype) {
    const sameStartStop = start === stop;
    const increasingRangeNegativeStep = start < stop && step < 0;
    const decreasingRangePositiveStep = stop < start && step > 1;
    if (sameStartStop || increasingRangeNegativeStep ||
        decreasingRangePositiveStep) {
        return util.makeZerosTypedArray(0, dtype);
    }
    const numElements = Math.abs(Math.ceil((stop - start) / step));
    const values = util.makeZerosTypedArray(numElements, dtype);
    if (stop < start && step === 1) {
        // Auto adjust the step's sign if it hasn't been set
        // (or was set to 1)
        step = -1;
    }
    values[0] = start;
    for (let i = 1; i < values.length; i++) {
        values[i] = values[i - 1] + step;
    }
    return values;
}
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