69 lines
2.0 KiB
Java
69 lines
2.0 KiB
Java
/*
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SETTINGS: (please don't move this part)
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PATH=functions.VariableRule
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*/
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import org.warp.picalculator.math.Function;
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import org.warp.picalculator.math.FunctionOperator;
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import org.warp.picalculator.math.FunctionDynamic;
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import org.warp.picalculator.math.FunctionSingle;
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import org.warp.picalculator.math.MathContext;
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import it.unimi.dsi.fastutil.objects.ObjectArrayList;
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import org.nevec.rjm.BigDecimalMath;
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import org.warp.picalculator.Utils;
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import org.warp.picalculator.math.MathematicalSymbols;
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import org.warp.picalculator.Error;
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import org.warp.picalculator.ScriptUtils;
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import org.warp.picalculator.math.rules.Rule;
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import org.warp.picalculator.math.rules.RuleType;
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import org.warp.picalculator.math.rules.RulesManager;
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import org.warp.picalculator.math.functions.Multiplication;
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import org.warp.picalculator.math.functions.Sum;
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import org.warp.picalculator.math.functions.Subtraction;
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import org.warp.picalculator.math.functions.Variable;
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import org.warp.picalculator.math.functions.Number;
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/**
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* Variable
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* a = n
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*
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* @author Andrea Cavalli
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*
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*/
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public class VariableRule implements Rule {
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// Rule name
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@Override
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public String getRuleName() {
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return "Variable";
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}
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// Rule type
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@Override
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public RuleType getRuleType() {
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return RuleType.CALCULATION;
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}
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/* Rule function
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Returns:
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- null if it's not executable on the function "f"
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- An ObjectArrayList<Function> if it did something
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*/
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@Override
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public ObjectArrayList<Function> execute(Function f) throws Error {
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if (f instanceof Variable) {
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ObjectArrayList<Function> result = new ObjectArrayList<>();
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Character variable = ((Variable)f).getChar();
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MathContext mathContext = f.getMathContext();
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if (mathContext.exactMode == false) {
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if (variable.equals(MathematicalSymbols.PI)) {
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//a = n
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result.add(new Number(mathContext, BigDecimalMath.pi(new java.math.MathContext(Utils.scale, Utils.scaleMode2))));
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return result;
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}
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}
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}
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return null;
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}
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}
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