ABS(CAST(0.0 AS DOUBLE)) returned -0.0 instead of 0.0.

h2/src/docsrc/html/changelog.html

@@ -21,6 +21,8 @@ Change Log
 
 <h2>Next Version (unreleased)</h2>
 <ul>
+<li>ABS(CAST(0.0 AS DOUBLE)) returned -0.0 instead of 0.0.
+</li>
 <li>BNF auto-completion failed with unquoted identifiers.
 </li>
 <li>Oracle compatibility: empty strings were not converted to NULL when using prepared statements.

h2/src/main/org/h2/expression/Function.java

@@ -581,7 +581,7 @@ public class Function extends Expression implements FunctionCall {
         Value result;
         switch (info.type) {
         case ABS:
-            result = v0.getSignum() > 0 ? v0 : v0.negate();
+            result = v0.getSignum() >= 0 ? v0 : v0.negate();
             break;
         case ACOS:
             result = ValueDouble.get(Math.acos(v0.getDouble()));

h2/src/test/org/h2/test/testScript.sql

@@ -3,6 +3,12 @@
 -- Initial Developer: H2 Group
 --
 --- special grammar and test cases ---------------------------------------------------------------------------------------------
+select abs(cast(0.0 as double)) x;
+> X
+> ---
+> 0.0
+> rows: 1
+
 select * from table(a int=(1)), table(b int=(2));
 > A B
 > - -