Tron Math

Description

Tron Math implements some specific methods of JDK8 x86 , which will produce different results in other platform environments. The current java-tron runtime environment is JDK8 x86. To support the upgrade to JDK11 x86, incompatible functions are implemented in C++ inline assembly and package the native libraries used by java-tron.

Using the Dependency

gradle

    dependencies {
        implementation 'io.github.zhang0125:tron-math:0.1.0'
        }

maven

    <dependency>
        <groupId>io.github.zhang0125</groupId>
        <artifactId>tron-math</artifactId>
        <version>0.1.0</version>
    </dependency>

Usage

Recommended Package imports:

import org.tron.math.TronMath;

Loading dynamic library at server startup:

TronMath.loadLib();

Use

double result = TronMath.pow(4. 0.5);

Building

The following Steps work on mac, linux well, other platforms are not verified yet.

Supported Platforms

The following platforms are supported:

• OS X Mojave with X Code 11 (x86_64)
• CentOS (x86_64)

Prerequisites

• GNU compiler toolchain, gcc-c++
• JAVA(1.11+)，make sure the current session $JAVA_HOME is set.
• cmake2.8+
• git
• maven3
• pkg-configls (linux maybe required)
• libtool (linux maybe required)

Build Procedure

First，build the native library on both osx64 and linux64

git clone https://github.com/zhang0125/tron-math.git
cd tron-math/cpp
mkdir build && cd build
cmake ..
make

Use the dynamic libraries libtron_math.so and libtron_math.dylib built above to replace the dynamic libraries in src/main/resources/META-INF/native for the corresponding platform.

Then，build TronMath

mvn clean install

Build Results

tron-math/target/tron-math-${version}.jar : The java class file to the library.