24 lines
761 B
Java
24 lines
761 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 TanH 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(tanh(object));
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}
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public Object tanh(Object paramObject) throws ParseException {
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if (paramObject instanceof Complex)
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return ((Complex)paramObject).tanh();
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if (paramObject instanceof Number) {
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double d = ((Number)paramObject).doubleValue();
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return new Double((Math.exp(d) - Math.exp(-d)) / (Math.pow(Math.E, d) + Math.pow(Math.E, -d)));
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}
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throw new ParseException("Invalid parameter type");
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}
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}
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