46 lines
1.7 KiB
Java
46 lines
1.7 KiB
Java
package org.nfunk.jep.function;
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import java.util.Stack;
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import org.nfunk.jep.ParseException;
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import org.nfunk.jep.type.Complex;
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public class Subtract extends PostfixMathCommand {
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public void run(Stack paramStack) throws ParseException {
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checkStack(paramStack);
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Object object1 = paramStack.pop();
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Object object2 = paramStack.pop();
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paramStack.push(sub(object2, object1));
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}
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public Object sub(Object paramObject1, Object paramObject2) throws ParseException {
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if (paramObject1 instanceof Complex) {
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if (paramObject2 instanceof Complex)
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return sub((Complex)paramObject1, (Complex)paramObject2);
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if (paramObject2 instanceof Number)
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return sub((Complex)paramObject1, (Number)paramObject2);
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} else if (paramObject1 instanceof Number) {
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if (paramObject2 instanceof Complex)
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return sub((Number)paramObject1, (Complex)paramObject2);
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if (paramObject2 instanceof Number)
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return sub((Number)paramObject1, (Number)paramObject2);
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}
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throw new ParseException("Invalid parameter type");
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}
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public Double sub(Number paramNumber1, Number paramNumber2) {
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return new Double(paramNumber1.doubleValue() - paramNumber2.doubleValue());
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}
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public Complex sub(Complex paramComplex1, Complex paramComplex2) {
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return new Complex(paramComplex1.re() - paramComplex2.re(), paramComplex1.im() - paramComplex2.im());
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}
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public Complex sub(Complex paramComplex, Number paramNumber) {
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return new Complex(paramComplex.re() - paramNumber.doubleValue(), paramComplex.im());
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}
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public Complex sub(Number paramNumber, Complex paramComplex) {
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return new Complex(paramNumber.doubleValue() - paramComplex.re(), -paramComplex.im());
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}
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}
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