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chenyc

2025-02-12 ea42ff3ebee1eeb3fb29423aa848a249441db81c

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/**
 * @license
 * Copyright 2022 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';
function lowerBound(array, value) {
    let left = 0;
    let right = array.length;
    let mid = 0;
    while (left < right) {
        mid = Math.floor((left + right) / 2);
        if (array[mid] < value) {
            left = mid + 1;
        }
        else {
            right = mid;
        }
    }
    return right;
}
function upperBound(array, value) {
    let left = 0;
    let right = array.length;
    let mid = 0;
    while (left < right) {
        mid = Math.floor((left + right) / 2);
        if (array[mid] <= value) {
            left = mid + 1;
        }
        else {
            right = mid;
        }
    }
    return right;
}
export function searchSortedImpl(sortedInputs, values, batchSize, numInputs, numValues, side) {
    const output = util.getArrayFromDType('int32', batchSize * numValues);
    for (let b = 0; b < batchSize; ++b) {
        const sortedInputsSlice = sortedInputs.slice(b * numInputs, (b + 1) * numInputs);
        const outputOffset = b * numValues;
        for (let i = 0; i < numValues; ++i) {
            output[outputOffset + i] = side === 'left' ?
                lowerBound(sortedInputsSlice, values[i + outputOffset]) :
                upperBound(sortedInputsSlice, values[i + outputOffset]);
        }
    }
    return output;
}
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