svn commit: r1371170 - /commons/proper/math/trunk/src/test/java/org/apache/commons/math3/util/FastMathTest.java

[erans]

Author: erans
Date: Thu Aug  9 11:40:01 2012
New Revision: 1371170

URL: http://svn.apache.org/viewvc?rev=1371170&view=rev
Log:
Unit test for "FastMath.pow(double,int)".

Modified:
    
commons/proper/math/trunk/src/test/java/org/apache/commons/math3/util/FastMathTest.java

Modified: 
commons/proper/math/trunk/src/test/java/org/apache/commons/math3/util/FastMathTest.java
URL: 
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/java/org/apache/commons/math3/util/FastMathTest.java?rev=1371170&r1=1371169&r2=1371170&view=diff
==============================================================================
--- 
commons/proper/math/trunk/src/test/java/org/apache/commons/math3/util/FastMathTest.java
 (original)
+++ 
commons/proper/math/trunk/src/test/java/org/apache/commons/math3/util/FastMathTest.java
 Thu Aug  9 11:40:01 2012
@@ -1105,4 +1105,18 @@ public class FastMathTest {
         Assert.assertEquals(1.0F, FastMath.copySign(1d, 0.0F), delta);
         Assert.assertEquals(-1.0F, FastMath.copySign(1d, -2.0F), delta);
     }
+
+    @Test
+    public void testIntPow() {
+        final double base = 1.23456789;
+        final int maxExp = 300;
+
+        for (int i = 0; i < maxExp; i++) {
+            final double expected = FastMath.pow(base, (double) i);
+            Assert.assertEquals("exp=" + i,
+                                expected,
+                                FastMath.pow(base, i),
+                                60 * Math.ulp(expected));
+        }
+    }
 }