vectorExpGPU function

GPUTensor<Vector> vectorExpGPU(
  1. GPUTensor<Vector> v,
  2. CommandBuffer tape, {
  3. GPUTensor<Vector>? outTensor,
})

Appends the commands for applying the e^v exponential function on vector v to tape.

Implementation

GPUTensor<Vector> vectorExpGPU(GPUTensor<Vector> v, CommandBuffer tape,
    {GPUTensor<Vector>? outTensor}) {
  int N = v.shape[0];
  GPUTensor<Vector> out =
      outTensor ?? GPUTensor<Vector>(List<double>.filled(N, 0.0));

  tape.putInt(OP_EXP_ELEMENTWISE);
  tape.putString(v.id);
  tape.putString(out.id);

  out.creator = GPUNode(
    [v],
    (CommandBuffer bTape) {
      bTape.putInt(OP_EXP_BACKWARD);
      bTape.putString(out.gradId);
      bTape.putString(out.id);
      bTape.putString(v.gradId);
    },
    opName: 'exp_vectorGPU',
    cost: N,
  );

  return out;
}