bundles/org.simantics.spreadsheet/src/org/simantics/spreadsheet/solver/formula/SqrtFormulaFunction.java

   1 package org.simantics.spreadsheet.solver.formula;
   2
   3 import org.simantics.spreadsheet.Spreadsheets;
   4 import org.simantics.spreadsheet.solver.formula.parser.ast.AstArgList;
   5
   6 public class SqrtFormulaFunction implements CellFormulaFunction<Object> {
   7
   8     @Override
   9     public Object evaluate(CellValueVisitor visitor, AstArgList args) {
  10         if (args.values.size() != 1) throw new IllegalStateException();
  11
  12         Object number = args.values.get(0).accept(visitor);
  13         Double dVal = Spreadsheets.asDoubleWhereEmptyStringIsZero(number);
  14         if(dVal==null) return FormulaError2.handleErrorCall(number);
  15         if(dVal<0) return FormulaError2.NUM.getString();
  16
  17         return Math.sqrt(dVal);
  18     }
  19 }