/*
 * Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package com.oracle.graal.nodes.calc;

import java.io.*;
import java.util.function.*;

import com.oracle.graal.compiler.common.type.*;
import com.oracle.graal.compiler.common.type.ArithmeticOpTable.*;
import com.oracle.graal.compiler.common.type.ArithmeticOpTable.UnaryOp.*;
import com.oracle.graal.lir.gen.*;
import com.oracle.graal.nodeinfo.*;
import com.oracle.graal.nodes.*;
import com.oracle.graal.nodes.spi.*;

/**
 * Square root.
 */
@NodeInfo
public class SqrtNode extends UnaryArithmeticNode<Sqrt> implements ArithmeticLIRLowerable, NarrowableArithmeticNode {

    public static SqrtNode create(ValueNode x) {
        return new SqrtNode(x);
    }

    protected SqrtNode(ValueNode x) {
        super((Function<ArithmeticOpTable, UnaryOp<Sqrt>> & Serializable) ArithmeticOpTable::getSqrt, x);
    }

    @Override
    public void generate(NodeMappableLIRBuilder builder, ArithmeticLIRGenerator gen) {
        builder.setResult(this, gen.emitMathSqrt(builder.operand(getValue())));
    }

    @NodeIntrinsic
    public static double sqrt(double n) {
        return Math.sqrt(n);
    }
}