use double instead of float

Author: rbri

src/main/java/com/gargoylesoftware/css/dom/CSSValueImpl.java

@@ -294,14 +294,14 @@ public LexicalUnit.LexicalUnitType getLexicalUnitType() {
         return null;
     }
 
-    public void setFloatValue(final float floatValue) throws DOMException {
-        value_ = LexicalUnitImpl.createNumber(null, floatValue);
+    public void setDoubleValue(final double doubleValue) throws DOMException {
+        value_ = LexicalUnitImpl.createNumber(null, doubleValue);
     }
 
-    public float getFloatValue() throws DOMException {
+    public double getDoubleValue() throws DOMException {
         if (value_ instanceof LexicalUnit) {
             final LexicalUnit lu = (LexicalUnit) value_;
-            return lu.getFloatValue();
+            return lu.getDoubleValue();
         }
         throw new DOMExceptionImpl(
             DOMException.INVALID_ACCESS_ERR,

src/main/java/com/gargoylesoftware/css/parser/AbstractCSSParser.java

@@ -558,8 +558,8 @@ protected int intValue(final char op, final String s) {
         return result;
     }
 
-    protected float floatValue(final char op, final String s) {
-        final float result = Float.parseFloat(s);
+    protected double doubleValue(final char op, final String s) {
+        final double result = Double.parseDouble(s);
         if (op == '-') {
             return -1 * result;
         }

src/main/java/com/gargoylesoftware/css/parser/LexicalUnit.java

@@ -92,9 +92,9 @@ enum LexicalUnitType {
     int getIntegerValue();
 
     /**
-     * @return the float value.
+     * @return the double value.
      */
-    float getFloatValue();
+    double getDoubleValue();
 
     /**
      * @return the string representation of the unit.