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