gx

chenyc

2025-02-12 ea42ff3ebee1eeb3fb29423aa848a249441db81c

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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, util } from '@tensorflow/tfjs-core';
export function bincountImpl(xVals, weightsVals, weightsDtype, weightsShape, size) {
    const weightsSize = util.sizeFromShape(weightsShape);
    const outVals = util.makeZerosTypedArray(size, weightsDtype);
    for (let i = 0; i < xVals.length; i++) {
        const value = xVals[i];
        if (value < 0) {
            throw new Error('Input x must be non-negative!');
        }
        if (value >= size) {
            continue;
        }
        if (weightsSize > 0) {
            outVals[value] += weightsVals[i];
        }
        else {
            outVals[value] += 1;
        }
    }
    return outVals;
}
export function bincountReduceImpl(xBuf, weightsBuf, size, binaryOutput = false) {
    const numRows = xBuf.shape[0];
    const numCols = xBuf.shape[1];
    const outBuf = buffer([numRows, size], weightsBuf.dtype);
    for (let i = 0; i < numRows; i++) {
        for (let j = 0; j < numCols; j++) {
            const value = xBuf.get(i, j);
            if (value < 0) {
                throw new Error('Input x must be non-negative!');
            }
            if (value >= size) {
                continue;
            }
            if (binaryOutput) {
                outBuf.set(1, i, value);
            }
            else {
                if (weightsBuf.size > 0) {
                    outBuf.set(outBuf.get(i, value) + weightsBuf.get(i, j), i, value);
                }
                else {
                    outBuf.set(outBuf.get(i, value) + 1, i, value);
                }
            }
        }
    }
    return outBuf;
}
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