22 lines
661 B
Java
22 lines
661 B
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 UMinus extends PostfixMathCommand {
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public void run(Stack paramStack) throws ParseException {
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checkStack(paramStack);
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Object object = paramStack.pop();
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paramStack.push(umin(object));
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}
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public Object umin(Object paramObject) throws ParseException {
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if (paramObject instanceof Complex)
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return ((Complex)paramObject).neg();
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if (paramObject instanceof Number)
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return new Double(-((Number)paramObject).doubleValue());
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throw new ParseException("Invalid parameter type");
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}
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}
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