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From er...@apache.org
Subject svn commit: r1062761 - /commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java
Date Mon, 24 Jan 2011 12:59:59 GMT
Author: erans
Date: Mon Jan 24 12:59:58 2011
New Revision: 1062761

URL: http://svn.apache.org/viewvc?rev=1062761&view=rev
Log:
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).

Modified:
    commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java

Modified: commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java
URL: http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java?rev=1062761&r1=1062760&r2=1062761&view=diff
==============================================================================
--- commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java
(original)
+++ commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathTestPerformance.java
Mon Jan 24 12:59:58 2011
@@ -17,6 +17,7 @@
 package org.apache.commons.math.util;
 
 import org.junit.Test;
+import org.junit.Ignore;
 
 /**
  * Performance tests for FastMath.
@@ -25,7 +26,10 @@ import org.junit.Test;
  * Invoke by running {@code mvn test -Dtest=FastMathTestPerformance}
  */
 public class FastMathTestPerformance {
-    @Test
+    private static final int RUNS = 10000000;
+    private static final double SCALE = 1000d / RUNS;
+
+    @Ignore
     public void testPerformance() {
         final int numberOfRuns = 10000000;
         for (int j = 0; j < 10; j++) {
@@ -234,5 +238,354 @@ public class FastMathTestPerformance {
 
         }
     }
-    
-}
\ No newline at end of file
+
+    @Test
+    public void testLog() {
+        System.out.print("log ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.log(Math.PI + i/* 1.0 + i/1e9 */);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.log(Math.PI + i/* 1.0 + i/1e9 */);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.log(Math.PI + i/* 1.0 + i/1e9 */);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testPow() {
+        System.out.print("pow ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.pow(Math.PI + i / 1e6, i / 1e6);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.pow(Math.PI + i / 1e6, i / 1e6);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.pow(Math.PI + i / 1e6, i / 1e6);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testExp() {
+        System.out.print("exp ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.exp(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.exp(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.exp(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testSin() {
+        System.out.print("sin ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.sin(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.sin(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.sin(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testAsin() {
+        System.out.print("asin ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.asin(i / 10000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.asin(i / 10000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.asin(i / 10000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testCos() {
+        System.out.print("cos ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.cos(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.cos(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.cos(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+            
+    @Test
+    public void testAcos() {
+        System.out.print("acos ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.acos(i / 10000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.acos(i / 10000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.acos(i / 10000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testTan() {
+        System.out.print("tan ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.tan(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.tan(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.tan(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testAtan() {
+        System.out.print("atan ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.atan(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.atan(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.atan(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+     
+    @Test
+    public void testCbrt() {
+        System.out.print("cbrt ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.cbrt(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.cbrt(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.cbrt(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testCosh() {
+        System.out.print("cosh ");        
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.cosh(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.cosh(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.cosh(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testSinh() {
+        System.out.print("sinh ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.sinh(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.sinh(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.sinh(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+
+    @Test
+    public void testTanh() {
+        System.out.print("tanh ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.tanh(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.tanh(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.tanh(i / 1000000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+     
+    @Test
+    public void testExpm1() {
+        System.out.print("expm1 ");
+        double x = 0;
+        long time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += StrictMath.expm1(-i / 100000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += FastMath.expm1(-i / 100000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.print(time * SCALE + " ");
+
+        x = 0;
+        time = System.currentTimeMillis();
+        for (int i = 0; i < RUNS; i++)
+            x += Math.expm1(-i / 100000.0);
+        time = System.currentTimeMillis() - time;
+        System.out.println(time * SCALE);
+    }
+}



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