commit e5049ecc4590896a75dedcb098da9e991e1764ee
Author: DH
Date:   Wed Jul 8 09:20:31 2009 +1000

    Handle special number cases (nan,{+-}infinity) in PostgreSQL
    When contructing the EXECUTE statement, there is a special case that
    we need to handle whereby we explicitly put quotes around the
    special float values before submutting the statement for execution
    
    Task-number:233829
    Reviewed-by: BK

diff --git a/src/sql/drivers/psql/qsql_psql.cpp b/src/sql/drivers/psql/qsql_psql.cpp
index 69697da..64b2a23 100644
--- a/src/sql/drivers/psql/qsql_psql.cpp
+++ b/src/sql/drivers/psql/qsql_psql.cpp
@@ -54,6 +54,8 @@
 #include <qstringlist.h>
 #include <qmutex.h>
 
+#include <qdebug.h>
+
 #include <libpq-fe.h>
 #include <pg_config.h>
 
@@ -1144,6 +1146,21 @@ QString QPSQLDriver::formatValue(const QSqlField &field, bool trimStrings) const
             qPQfreemem(data);
             break;
         }
+        case QVariant::Double: {
+            double val = field.value().toDouble();
+            if (isnan(val))
+                r = QLatin1String("'NaN'");
+            else {
+                int res = isinf(val);
+                if (res == 1)
+                    r = QLatin1String("'Infinity'");
+                else if (res == -1)
+                    r = QLatin1String("'-Infinity'");
+                else
+                    r = QSqlDriver::formatValue(field, trimStrings);
+            }
+            break;
+        }
         default:
             r = QSqlDriver::formatValue(field, trimStrings);
             break;