Splitted the single "testPerformance" method into several ones (one test case
per mathematical function) for easier comparison. Added a third benchmark (that calls "Math" methods). git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1062761 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Gilles Sadowski
parent
97e89cdd7a
commit
ecfd29007c
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@ -17,6 +17,7 @@
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package org.apache.commons.math.util;
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import org.junit.Test;
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import org.junit.Ignore;
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/**
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* Performance tests for FastMath.
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@ -25,7 +26,10 @@ import org.junit.Test;
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* Invoke by running {@code mvn test -Dtest=FastMathTestPerformance}
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*/
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public class FastMathTestPerformance {
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@Test
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private static final int RUNS = 10000000;
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private static final double SCALE = 1000d / RUNS;
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@Ignore
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public void testPerformance() {
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final int numberOfRuns = 10000000;
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for (int j = 0; j < 10; j++) {
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@ -234,5 +238,354 @@ public class FastMathTestPerformance {
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}
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}
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}
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@Test
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public void testLog() {
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System.out.print("log ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.log(Math.PI + i/* 1.0 + i/1e9 */);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.log(Math.PI + i/* 1.0 + i/1e9 */);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.log(Math.PI + i/* 1.0 + i/1e9 */);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testPow() {
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System.out.print("pow ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.pow(Math.PI + i / 1e6, i / 1e6);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.pow(Math.PI + i / 1e6, i / 1e6);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.pow(Math.PI + i / 1e6, i / 1e6);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testExp() {
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System.out.print("exp ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.exp(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.exp(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.exp(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testSin() {
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System.out.print("sin ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.sin(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.sin(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.sin(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testAsin() {
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System.out.print("asin ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.asin(i / 10000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.asin(i / 10000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.asin(i / 10000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testCos() {
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System.out.print("cos ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.cos(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.cos(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.cos(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testAcos() {
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System.out.print("acos ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.acos(i / 10000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.acos(i / 10000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.acos(i / 10000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testTan() {
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System.out.print("tan ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.tan(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.tan(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.tan(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testAtan() {
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System.out.print("atan ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.atan(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.atan(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.atan(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testCbrt() {
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System.out.print("cbrt ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.cbrt(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.cbrt(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.cbrt(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testCosh() {
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System.out.print("cosh ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.cosh(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.cosh(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.cosh(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testSinh() {
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System.out.print("sinh ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.sinh(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.sinh(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.sinh(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testTanh() {
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System.out.print("tanh ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.tanh(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.tanh(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.tanh(i / 1000000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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@Test
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public void testExpm1() {
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System.out.print("expm1 ");
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double x = 0;
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long time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += StrictMath.expm1(-i / 100000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += FastMath.expm1(-i / 100000.0);
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time = System.currentTimeMillis() - time;
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System.out.print(time * SCALE + " ");
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x = 0;
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time = System.currentTimeMillis();
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for (int i = 0; i < RUNS; i++)
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x += Math.expm1(-i / 100000.0);
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time = System.currentTimeMillis() - time;
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System.out.println(time * SCALE);
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}
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}
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