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 RoundFormulaFunction implements CellFormulaFunction<Object> {
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11 public Object evaluate(CellValueVisitor visitor, AstArgList args) {
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12 if (args.values.size() != 2) throw new IllegalStateException();
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14 Object number = args.values.get(0).accept(visitor);
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15 Object digits = args.values.get(1).accept(visitor);
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17 FormulaError2 err1 = FormulaError2.forObject(number);
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18 if(err1!=null) return err1.getString();
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19 FormulaError2 err2 = FormulaError2.forObject(digits);
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20 if(err2!=null) return err2.getString();
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22 double n = SpreadsheetGraphUtils.asNumber(number);
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23 double n2 = SpreadsheetGraphUtils.asNumber(digits);
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24 Double scale = Math.pow(10, n2);
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26 long l = Math.round(scale * n);
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27 Double d = Double.valueOf(((double) l) / scale);
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