content: /*
   * Copyright (C) 2016-2023 ActionTech.
   * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher.
   */
  
  package com.actiontech.dble.plan.common.item.function.mathsfunc;
  
  import com.actiontech.dble.plan.common.item.Item;
  import com.actiontech.dble.plan.common.item.function.ItemFunc;
  import com.actiontech.dble.plan.common.item.function.primary.ItemDecFunc;
  
  import java.math.BigDecimal;
  import java.util.List;
  
  
  public class ItemFuncSqrt extends ItemDecFunc {
  
      public ItemFuncSqrt(List<Item> args, int charsetIndex) {
          super(args, charsetIndex);
      }
  
      @Override
      public final String funcName() {
          return "sqrt";
      }
  
      public BigDecimal valReal() {
          double value = args.get(0).valReal().doubleValue();
  
          if ((nullValue = args.get(0).isNullValue()))
              return BigDecimal.ZERO;
          return new BigDecimal(Math.sqrt(value));
      }
  
      @Override
      public ItemFunc nativeConstruct(List<Item> realArgs) {
          return new ItemFuncSqrt(realArgs, charsetIndex);
      }
  }
  