Function Subtract

cpp/src/gandiva/precompiled/decimal_ops.cc:233–236

}

BasicDecimal128 Subtract(const BasicDecimalScalar128& x, const BasicDecimalScalar128& y,
                         int32_t out_precision, int32_t out_scale) {
  return Add(x, {-y.value(), y.precision(), y.scale()}, out_precision, out_scale);
}

// Multiply when the out_precision is 38, and there is no trimming of the scale i.e
// the intermediate value is the same as the final value.