64 lines
1.8 KiB
Java
64 lines
1.8 KiB
Java
package it.cavallium.warppi.math.rules.functions;
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/*
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SETTINGS: (please don't move this part)
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PATH=functions.NumberRule
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*/
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import java.math.BigInteger;
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import it.cavallium.warppi.math.Function;
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import it.cavallium.warppi.math.MathContext;
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import it.cavallium.warppi.math.functions.Division;
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import it.cavallium.warppi.math.functions.Number;
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import it.cavallium.warppi.math.rules.Rule;
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import it.cavallium.warppi.math.rules.RuleType;
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import it.cavallium.warppi.util.Utils;
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import it.unimi.dsi.fastutil.objects.ObjectArrayList;
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/**
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* Number
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*
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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 NumberRule 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 "Number";
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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(final Function f) {
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if (f instanceof Number) {
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final ObjectArrayList<Function> result = new ObjectArrayList<>();
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final MathContext mathContext = f.getMathContext();
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if (mathContext.exactMode)
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if (((Number) f).isInteger() == false) {
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final int decimalPlaces = ((Number) f).getNumberOfDecimalPlaces();
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final int decimalDigits = decimalPlaces + 1;
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if (decimalDigits < Utils.maxAutoFractionDigits) {
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final Number divisor = new Number(mathContext, BigInteger.TEN.pow(decimalPlaces));
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final Function number = new Number(mathContext, ((Number) f).getTerm().multiply(divisor.getTerm()));
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final Function div = new Division(mathContext, number, divisor);
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result.add(div);
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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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