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Ismael Juma ijuma

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ijuma / FastMathTestPerformance.java
Created Feb 23, 2011
Modified from the version in Commons Math to fix some micro-benchmarking problems.
View FastMathTestPerformance.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
*
@ijuma
ijuma / fastMathPerformance
Created Feb 23, 2011
StrictMath vs FastMath vs Math
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Intel Core i7 CPU 860 2.80GHz
Running org.apache.commons.math.util.FastMathTestPerformance
Name StrictMath FastMath Math Runs=10000000 Java 1.6.0_25-ea (1.6.0_25-ea-b01) Java HotSpot(TM) 64-Bit Server VM (20.0-b08)
log 71 1.0 39 0.5555 21 0.2953
log10 94 1.0 108 1.1466 20 0.2174
log1p 74 1.0 103 1.3986 76 1.0269
pow 244 1.0 140 0.5726 238 0.9752
powII 159 1.0 120 0.7582 149 0.9415
exp 53 1.0 26 0.4959 39 0.7323