Method constructor

tfjs-backend-webgl/src/select_gpu.ts:26–65

(cRank: number, shape: number[], rank: number)

  userCode: string;

  constructor(cRank: number, shape: number[], rank: number) {
    this.outputShape = shape;

    let cCoords;
    let abCoords;
    if (rank > 4) {
      throw Error(`Where for rank ${rank} is not yet supported`);
    }

    if (rank === 1) {
      abCoords = `resRC`;
      cCoords = `resRC`;
    } else {
      const currentCoords = ['resRC.x', 'resRC.y', 'resRC.z', 'resRC.w'];
      const cCoordVars = [];
      const abCoordVars = [];
      for (let i = 0; i < shape.length; i++) {
        abCoordVars.push(`${currentCoords[i]}`);
        if (i < cRank) {
          cCoordVars.push(`${currentCoords[i]}`);
        }
      }
      cCoords = cCoordVars.join();
      abCoords = abCoordVars.join();
    }

    const dtype = getCoordsDataType(rank);

    this.userCode = `
      void main() {
        ${dtype} resRC = getOutputCoords();
        float cVal = getC(${cCoords});
        if (cVal >= 1.0) {
          setOutput(getA(${abCoords}));
        } else {
          setOutput(getB(${abCoords}));
        }
      }
    `;
  }
}