Function Truncate

cpp/src/gandiva/precompiled/decimal_ops.cc:678–692

}

BasicDecimal128 Truncate(const BasicDecimalScalar128& x, int32_t out_precision,
                         int32_t out_scale, int32_t rounding_scale, bool* overflow) {
  // no-op if target scale is same as arg scale
  if (x.scale() == out_scale && rounding_scale >= 0) {
    return x.value();
  }

  if (rounding_scale < 0) {
    return RoundWithNegativeScale(x, out_precision, rounding_scale,
                                  RoundType::kRoundTypeTrunc, overflow);
  } else {
    return RoundWithPositiveScale(x, out_precision, rounding_scale,
                                  RoundType::kRoundTypeTrunc, overflow);
  }
}

BasicDecimal128 Ceil(const BasicDecimalScalar128& x, bool* overflow) {
  return RoundWithPositiveScale(x, x.precision(), 0, RoundType::kRoundTypeCeil, overflow);