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// export C interface
extern "C" void computeGold(float *reference, float *idata,
                            const unsigned int len);

////////////////////////////////////////////////////////////////////////////////
//! Compute reference data set
//! Each element is multiplied with the number of threads / array length
//! @param reference  reference data, computed but preallocated
//! @param idata      input data as provided to device
//! @param len        number of elements in reference / idata
////////////////////////////////////////////////////////////////////////////////
void computeGold(float *reference, float *idata, const unsigned int len) {
  const float f_len = static_cast<float>(len);

  for (unsigned int i = 0; i < len; ++i) {
    reference[i] = idata[i] * f_len;
  }
}