Author: sebb
Date: Fri Jan 21 02:45:52 2011
New Revision: 1061602
URL: http://svn.apache.org/viewvc?rev=1061602&view=rev
Log:
Fix up double nextAfter special cases; add float test
Modified:
commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/MathUtilsTest.java
Modified:
commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/MathUtilsTest.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/MathUtilsTest.java?rev=1061602&r1=1061601&r2=1061602&view=diff
==============================================================================
---
commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/MathUtilsTest.java
(original)
+++
commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/MathUtilsTest.java
Fri Jan 21 02:45:52 2011
@@ -1021,16 +1021,28 @@ public final class MathUtilsTest extends
}
- public void testNextAfterSpecialCases() {
-
assertTrue(Double.isInfinite(FastMath.nextAfter(Double.NEGATIVE_INFINITY, 0)));
-
assertTrue(Double.isInfinite(FastMath.nextAfter(Double.POSITIVE_INFINITY, 0)));
- assertTrue(Double.isNaN(FastMath.nextAfter(Double.NaN, 0)));
- assertTrue(Double.isInfinite(FastMath.nextAfter(Double.MAX_VALUE,
Double.POSITIVE_INFINITY)));
- assertTrue(Double.isInfinite(FastMath.nextAfter(-Double.MAX_VALUE,
Double.NEGATIVE_INFINITY)));
- assertEquals(Double.MIN_VALUE, FastMath.nextAfter(0, 1), 0);
- assertEquals(-Double.MIN_VALUE, FastMath.nextAfter(0, -1), 0);
- assertEquals(0, FastMath.nextAfter(Double.MIN_VALUE, -1), 0);
- assertEquals(0, FastMath.nextAfter(-Double.MIN_VALUE, 1), 0);
+ public void testDoubleNextAfterSpecialCases() {
+
assertEquals(-Double.MAX_VALUE,FastMath.nextAfter(Double.NEGATIVE_INFINITY,
0D));
+
assertEquals(Double.MAX_VALUE,FastMath.nextAfter(Double.POSITIVE_INFINITY, 0D));
+ assertEquals(Double.NaN,FastMath.nextAfter(Double.NaN, 0D));
+
assertEquals(Double.POSITIVE_INFINITY,FastMath.nextAfter(Double.MAX_VALUE,
Double.POSITIVE_INFINITY));
+
assertEquals(Double.NEGATIVE_INFINITY,FastMath.nextAfter(-Double.MAX_VALUE,
Double.NEGATIVE_INFINITY));
+ assertEquals(Double.MIN_VALUE, FastMath.nextAfter(0D, 1D), 0D);
+ assertEquals(-Double.MIN_VALUE, FastMath.nextAfter(0D, -1D), 0D);
+ assertEquals(0D, FastMath.nextAfter(Double.MIN_VALUE, -1), 0D);
+ assertEquals(0D, FastMath.nextAfter(-Double.MIN_VALUE, 1), 0D);
+ }
+
+ public void testFloatNextAfterSpecialCases() {
+
assertEquals(-Float.MAX_VALUE,FastMath.nextAfter(Float.NEGATIVE_INFINITY, 0F));
+
assertEquals(Float.MAX_VALUE,FastMath.nextAfter(Float.POSITIVE_INFINITY, 0F));
+ assertEquals(Float.NaN,FastMath.nextAfter(Float.NaN, 0F));
+
assertEquals(Float.POSITIVE_INFINITY,FastMath.nextAfter(Float.MAX_VALUE,
Float.POSITIVE_INFINITY));
+
assertEquals(Float.NEGATIVE_INFINITY,FastMath.nextAfter(-Float.MAX_VALUE,
Float.NEGATIVE_INFINITY));
+ assertEquals(Float.MIN_VALUE, FastMath.nextAfter(0F, 1F), 0F);
+ assertEquals(-Float.MIN_VALUE, FastMath.nextAfter(0F, -1F), 0F);
+ assertEquals(0F, FastMath.nextAfter(Float.MIN_VALUE, -1F), 0F);
+ assertEquals(0F, FastMath.nextAfter(-Float.MIN_VALUE, 1F), 0F);
}
public void testScalb() {
