gx

chenyc

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 { buffer } from '@tensorflow/tfjs-core';
export function gatherV2Impl(xBuf, indicesBuf, flattenOutputShape) {
    const outBuf = buffer(flattenOutputShape, xBuf.dtype);
    for (let i = 0; i < outBuf.size; ++i) {
        const newLoc = outBuf.indexToLoc(i);
        const originalLoc = newLoc.slice();
        const batchIdx = originalLoc[0];
        const indicesIdx = originalLoc[2];
        const indicesIndex = indicesBuf.locToIndex([batchIdx, indicesIdx]);
        originalLoc[2] = indicesBuf.values[indicesIndex];
        const originalIndex = xBuf.locToIndex(originalLoc);
        if (0 <= originalIndex && originalIndex < xBuf.values.length) {
            outBuf.values[i] = xBuf.values[originalIndex];
        } // Else, index is out of bounds, so leave the default zero val in outBuf.
    }
    return outBuf;
}
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