Function expr_binary_op

extensions/expression-language/Expression.cpp:864–874

}

Value expr_binary_op(const std::vector<Value> &args, long double (*ldop)(long double, long double), int64_t (*iop)(int64_t, int64_t), bool long_only = false) {
  try {
    if (!long_only && !args[0].isDecimal() && !args[1].isDecimal()) {
      return Value(iop(args[0].asSignedLong(), args[1].asSignedLong()));
    } else {
      return Value(ldop(args[0].asLongDouble(), args[1].asLongDouble()));
    }
  } catch (const std::exception &) {
    return Value();
  }
}

Value expr_plus(const std::vector<Value> &args) {
  return expr_binary_op(args, [](long double a, long double b) {return a + b;}, [](int64_t a, int64_t b) {return a + b;});