src/main/java/org/apache/sysds/parser/BuiltinConstant.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.sysds.parser;

import org.apache.commons.lang3.EnumUtils;

/**
 * These are the builtin constants
 */
public enum BuiltinConstant {
	Inf(Double.POSITIVE_INFINITY),
	NaN(Double.NaN),
	pi(Math.PI);
	
	private DoubleIdentifier _id;

	private BuiltinConstant(double d) {
		this._id = new DoubleIdentifier(d);
	}

	public DoubleIdentifier get() {
		return this._id;
	}

	public static boolean contains(String name) {
		return EnumUtils.isValidEnum(BuiltinConstant.class, name);
	}
}