Function stridedSliceImpl

tfjs-backend-cpu/src/kernels/StridedSlice_impl.ts:20–36

(
    outShape: number[], xBuf: TensorBuffer<R>, strides: number[],
    begin: number[])

import {buffer, Rank, TensorBuffer} from '@tensorflow/tfjs-core';

export function stridedSliceImpl<R extends Rank>(
    outShape: number[], xBuf: TensorBuffer<R>, strides: number[],
    begin: number[]): TensorBuffer<R> {
  const outBuf = buffer(outShape, xBuf.dtype);

  for (let i = 0; i < outBuf.size; i++) {
    const loc = outBuf.indexToLoc(i);

    const newLoc: number[] = new Array(loc.length);
    for (let j = 0; j < newLoc.length; j++) {
      newLoc[j] = loc[j] * strides[j] + begin[j];
    }
    outBuf.set(xBuf.get(...newLoc), ...loc);
  }

  return outBuf as TensorBuffer<R>;
}