/*

 * Copyright (c) 2016, 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 org.graalvm.compiler.hotspot.amd64;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_COS_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_EXP_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_LOG10_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_LOG_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_POW_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_SIN_STUB;

import static org.graalvm.compiler.hotspot.amd64.AMD64HotSpotForeignCallsProvider.ARITHMETIC_TAN_STUB;

import org.graalvm.compiler.api.replacements.Snippet;

import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor;

import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage;

import org.graalvm.compiler.hotspot.meta.HotSpotProviders;

import org.graalvm.compiler.hotspot.stubs.SnippetStub;

import org.graalvm.compiler.options.OptionValues;

import org.graalvm.compiler.replacements.nodes.BinaryMathIntrinsicNode;

import org.graalvm.compiler.replacements.nodes.BinaryMathIntrinsicNode.BinaryOperation;

import org.graalvm.compiler.replacements.nodes.UnaryMathIntrinsicNode;

import org.graalvm.compiler.replacements.nodes.UnaryMathIntrinsicNode.UnaryOperation;

/**

 * Stub called to support {@link Math}.

 */

public class AMD64MathStub extends SnippetStub {

    public AMD64MathStub(ForeignCallDescriptor descriptor, OptionValues options, HotSpotProviders providers, HotSpotForeignCallLinkage linkage) {

        super(snippetName(descriptor), options, providers, linkage);

    }

    private static String snippetName(ForeignCallDescriptor descriptor) {

        if (descriptor == ARITHMETIC_LOG_STUB) {

            return "log";

        }

        if (descriptor == ARITHMETIC_LOG10_STUB) {

            return "log10";

        }

        if (descriptor == ARITHMETIC_SIN_STUB) {

            return "sin";

        }

        if (descriptor == ARITHMETIC_COS_STUB) {

            return "cos";

        }

        if (descriptor == ARITHMETIC_TAN_STUB) {

            return "tan";

        }

        if (descriptor == ARITHMETIC_EXP_STUB) {

            return "exp";

        }

        if (descriptor == ARITHMETIC_POW_STUB) {

            return "pow";

        }

        throw new InternalError("Unknown operation " + descriptor);

    }

    @Snippet

    private static double log(double value) {

        return UnaryMathIntrinsicNode.compute(value, UnaryOperation.LOG);

    }

    @Snippet

    private static double log10(double value) {

        return UnaryMathIntrinsicNode.compute(value, UnaryOperation.LOG10);

    }

    @Snippet

    private static double sin(double value) {

        return UnaryMathIntrinsicNode.compute(value, UnaryOperation.SIN);

    }

    @Snippet

    private static double cos(double value) {

        return UnaryMathIntrinsicNode.compute(value, UnaryOperation.COS);

    }

    @Snippet

    private static double tan(double value) {

        return UnaryMathIntrinsicNode.compute(value, UnaryOperation.TAN);

    }

    @Snippet

    private static double exp(double value) {

        return UnaryMathIntrinsicNode.compute(value, UnaryOperation.EXP);

    }

    @Snippet

    private static double pow(double value1, double value2) {

        return BinaryMathIntrinsicNode.compute(value1, value2, BinaryOperation.POW);

    }

}