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From s...@apache.org
Subject svn commit: r1063032 - /commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathStrictComparisonTest.java
Date Mon, 24 Jan 2011 22:26:31 GMT
Author: sebb
Date: Mon Jan 24 22:26:31 2011
New Revision: 1063032

URL: http://svn.apache.org/viewvc?rev=1063032&view=rev
Log:
Allow for specific atan2 and toRadians off-by-one errors

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

Modified: commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathStrictComparisonTest.java
URL: http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathStrictComparisonTest.java?rev=1063032&r1=1063031&r2=1063032&view=diff
==============================================================================
--- commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathStrictComparisonTest.java
(original)
+++ commons/proper/math/trunk/src/test/java/org/apache/commons/math/util/FastMathStrictComparisonTest.java
Mon Jan 24 22:26:31 2011
@@ -60,29 +60,29 @@ public class FastMathStrictComparisonTes
         Float.MIN_VALUE, Float.MAX_VALUE,                   // 6,7
         -Float.MIN_VALUE, -Float.MAX_VALUE,                 // 8,9
     };
-    
+
     private static final Object [] LONG_SPECIAL_VALUES = {
         -1,0,1,                                             // 1,2,3
         Long.MIN_VALUE, Long.MAX_VALUE,                     // 4,5
     };
-    
+
     private static final Object[] INT_SPECIAL_VALUES = {
         -1,0,1,                                             // 1,2,3
         Integer.MIN_VALUE, Integer.MAX_VALUE,               // 4,5
     };
-    
+
     private final Method mathMethod;
     private final Method fastMethod;
     private final Type[] types;
     private final Object[][] valueArrays;
-    
+
     public FastMathStrictComparisonTest(Method m, Method f, Type[] types, Object[][] data)
throws Exception{
         this.mathMethod=m;
         this.fastMethod=f;
         this.types=types;
         this.valueArrays=data;
     }
-    
+
     @Test
     public void test1() throws Exception{
         setupMethodCall(mathMethod, fastMethod, types, valueArrays);
@@ -96,21 +96,28 @@ public class FastMathStrictComparisonTes
     }
 
     private static void reportFailedResults(Method mathMethod, Object[] params, Object expected,
Object actual, int[] entries){
+        final String methodName = mathMethod.getName();
         String format = null;
         long actL=0;
         long expL=0;
         if (expected instanceof Double) {
             Double exp = (Double) expected;
             Double act = (Double) actual;
-            if (isNumber(exp) && isNumber(act)) { // show difference as hex
+            if (isNumber(exp) && isNumber(act) && exp != 0) { // show difference
as hex
                 actL = Double.doubleToLongBits(act);
                 expL = Double.doubleToLongBits(exp);
+                if (Math.abs(actL-expL)==1) {
+                    // Not 100% sure off-by-one errors are allowed everywhere, so only allow
for these methods
+                    if (methodName.equals("toRadians") || methodName.equals("atan2")) {
+                        return;
+                    }
+                }
                 format = "%016x";
             }
         } else if (expected instanceof Float ){
             Float exp = (Float) expected;
             Float act = (Float) actual;
-            if (isNumber(exp) && isNumber(act)) { // show difference as hex
+            if (isNumber(exp) && isNumber(act) && exp != 0) { // show difference
as hex
                 actL = Float.floatToIntBits(act);
                 expL = Float.floatToIntBits(exp);
                 format = "%08x";
@@ -119,7 +126,7 @@ public class FastMathStrictComparisonTes
         StringBuilder sb = new StringBuilder();
         sb.append(mathMethod.getReturnType().getSimpleName());
         sb.append(" ");
-        sb.append(mathMethod.getName());
+        sb.append(methodName);
         sb.append("(");
         String sep = "";
         for(Object o : params){
@@ -129,13 +136,13 @@ public class FastMathStrictComparisonTes
         }
         sb.append(") expected ");
         if (format != null){
-            sb.append(String.format(format, expL));                
+            sb.append(String.format(format, expL));
         } else {
             sb.append(expected);
         }
         sb.append(" actual ");
         if (format != null){
-            sb.append(String.format(format, actL));                
+            sb.append(String.format(format, actL));
         } else {
             sb.append(actual);
         }
@@ -148,7 +155,7 @@ public class FastMathStrictComparisonTes
         } else {
             System.out.println(message);
         }
-    }            
+    }
 
     private static void callMethods(Method mathMethod, Method fastMethod,
             Object[] params, int[] entries) throws IllegalAccessException,
@@ -163,8 +170,8 @@ public class FastMathStrictComparisonTes
             Assert.fail(mathMethod+" "+e);
         }
     }
-    
-    private static void setupMethodCall(Method mathMethod, Method fastMethod, 
+
+    private static void setupMethodCall(Method mathMethod, Method fastMethod,
             Type[] types, Object[][] valueArrays) throws Exception {
         Object[] params = new Object[types.length];
         int entry1 = 0;
@@ -177,9 +184,9 @@ public class FastMathStrictComparisonTes
                 int entry2 = 0;
                 for(Object d1 : valueArrays[1]) {
                     entry2++;
-                    params[1] = d1;                    
+                    params[1] = d1;
                     entries[1] = entry2;
-                    callMethods(mathMethod, fastMethod, params, entries);               
    
+                    callMethods(mathMethod, fastMethod, params, entries);
                 }
             } else {
                 callMethods(mathMethod, fastMethod, params, entries);
@@ -228,7 +235,7 @@ public class FastMathStrictComparisonTes
                             list.add(new Object[]{mathMethod, fastMethod, types, values});
 //                            setupMethodCall(mathMethod, fastMethod, params, data);
                         } else {
-                            System.out.println("Cannot find public FastMath method corresponding
to: "+mathMethod);                            
+                            System.out.println("Cannot find public FastMath method corresponding
to: "+mathMethod);
                         }
                     } catch (NoSuchMethodException e) {
                         System.out.println("Cannot find FastMath method corresponding to:
"+mathMethod);
@@ -238,5 +245,4 @@ public class FastMathStrictComparisonTes
         }
         return list;
     }
-
 }



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