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This open source software is a reference implementation, consisting of software and related files, for the OMG specification called the Semantics of a Foundational Subset for Executable UML Models (fUML). The reference implementation is intended to implement the execution semantics of UML activity models, accepting an XMI file from a conformant UML model as its input and providing an execution trace of the selected activity model(s) as its output. The core execution engine, which is directly generated from the normative syntactic and semantic models for fUML, may also be used as a library implementation of fUML in other software.

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/*
 * Initial version copyright 2008 Lockheed Martin Corporation, except  
 * as stated in the file entitled Licensing-Information. 
 * 
 * All modifications copyright 2009-2016 Data Access Technologies, Inc.
 *
 * Licensed under the Academic Free License version 3.0 
 * (http://www.opensource.org/licenses/afl-3.0.php), except as stated 
 * in the file entitled Licensing-Information. 
 */

package fUML.Semantics.Classes.Kernel;

import fUML.Debug;
import UMLPrimitiveTypes.*;

import fUML.Syntax.*;
import fUML.Syntax.Classes.Kernel.*;

import fUML.Semantics.*;
import fUML.Semantics.Loci.*;

public class RealValue extends fUML.Semantics.Classes.Kernel.PrimitiveValue {

	public float value = 0.0f;

	public fUML.Syntax.Classes.Kernel.ValueSpecification specify() {
		// Return a literal real with the value of this real value.

		LiteralReal literal = new LiteralReal();

		literal.type = this.type;
		literal.value = this.value;

		return literal;
	} // specify

	public boolean equals(fUML.Semantics.Classes.Kernel.Value otherValue) {
		// Test if this real value is equal to the otherValue.
		// To be equal, the otherValue must have the same value as this real
		// value.

		boolean isEqual = false;
		if (otherValue instanceof RealValue) {
			isEqual = ((RealValue) otherValue).value == this.value;
		}

		return isEqual;
	} // equals

	public fUML.Semantics.Classes.Kernel.Value copy() {
		// Create a new real value with the same value as this real value.

		RealValue newValue = (RealValue) (super.copy());

		newValue.value = this.value;
		return newValue;
	} // copy

	protected fUML.Semantics.Classes.Kernel.Value new_() {
		return new RealValue();
	} // new_

	public String toString() {
		String stringValue = "";

		if (this.value == 0) {
			stringValue = "0";
		} else {
			float positiveValue = this.value;

			if (positiveValue < 0) {
				positiveValue = -positiveValue;
			}

			int exponent = 0;

			if (positiveValue < .1) {
				while (positiveValue < .1) {
					positiveValue = positiveValue * 10;
					exponent = exponent - 1;
				}
			} else if (positiveValue >= 1) {
				while (positiveValue >= 1) {
					positiveValue = positiveValue / 10;
					exponent = exponent + 1;
				}
			}

			// This gives 9 significant digits in the mantissa.
			for (int i = 0; i < 9; i++) {
				positiveValue = positiveValue * 10;
			}

			IntegerValue integerValue = new IntegerValue();
			integerValue.value = (int) positiveValue;
			stringValue = "0." + integerValue.toString();
			integerValue.value = exponent;
			stringValue = stringValue + "E" + integerValue.toString();

			if (this.value < 0) {
				stringValue = "-" + stringValue;
			}
		}

		return stringValue;
	} // toString

} // RealValue