Add a few simple test cases for Math.sqrt(..).

These should at least detect incorrect target options (e.g. when the VM is built with hardware SQRT support on a platform that does have it). One example of a processor without hardware SQRT support is the Freescale e500mc.

Author: erik-brangs

testing/tests/basic/src/test/org/jikesrvm/basic/java/lang/TestMath.expected

@@ -24,3 +24,10 @@ Math.ceil(-Infinity) Expected: -Infinity Actual: -Infinity
 Math.ceil(Infinity) Expected: Infinity Actual: Infinity
 Math.ceil(0.0) Expected: 0.0 Actual: 0.0
 Math.ceil(0.0) Expected: 0.0 Actual: 0.0
+Math.sqrt(4.0) Expected: 2.0 Actual: 2.0
+Math.sqrt(Infinity) Expected: Infinity Actual: Infinity
+Math.sqrt(NaN) Expected: NaN Actual: NaN
+Math.sqrt(-Infinity) Expected: NaN Actual: NaN
+Math.sqrt(-1.0) Expected: NaN Actual: NaN
+Math.sqrt(-0.0) Expected: -0.0 Actual: -0.0
+Math.sqrt(0.0) Expected: 0.0 Actual: 0.0

testing/tests/basic/src/test/org/jikesrvm/basic/java/lang/TestMath.java

@@ -47,6 +47,15 @@ public static void main(String[] args) {
     runCeilTest(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
     runCeilTest(-0, -0);
     runCeilTest(0, 0);
+
+    runSQRTTest(4d, 2d);
+
+    runSQRTTest(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
+    runSQRTTest(Double.NaN, Double.NaN);
+    runSQRTTest(Double.NEGATIVE_INFINITY, Double.NaN);
+    runSQRTTest(-1d, Double.NaN);
+    runSQRTTest(-0.0d, -0.0d);
+    runSQRTTest(0.0d, 0.0d);
   }
 
   private static void runCeilTest(final double value, final double expected) {
@@ -56,4 +65,8 @@ private static void runCeilTest(final double value, final double expected) {
   private static void runFloorTest(final double value, final double expected) {
     System.out.println("Math.floor(" + value + ") Expected: " + expected + " Actual: " + Math.floor(value));
   }
+
+  private static void runSQRTTest(final double value, final double expected) {
+    System.out.println("Math.sqrt(" + value + ") Expected: " + expected + " Actual: " + Math.sqrt(value));
+  }
 }