org.apache.fop.fo.expr: class: RoundFunction

org.apache.fop.fo.expr
class: RoundFunction [javadoc | source]

java.lang.Object
   org.apache.fop.fo.expr.FunctionBase
      org.apache.fop.fo.expr.RoundFunction

All Implemented Interfaces:
Function

Method from org.apache.fop.fo.expr.RoundFunction Summary:
eval, nbArgs

Methods from org.apache.fop.fo.expr.FunctionBase:
getPercentBase, padArgsWithPropertyName

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.fop.fo.expr.RoundFunction Detail:
public Property eval(Property[] args, PropertyInfo pInfo) throws PropertyException { Number dbl = args[0].getNumber(); if (dbl == null) { throw new PropertyException("Non number operand to round function"); } double n = dbl.doubleValue(); double r = Math.floor(n + 0.5); if (r == 0.0 && n < 0.0) { r = -r; // round(-0.2) returns -0 not 0 } return NumberProperty.getInstance(r); }
public int nbArgs() { return 1; }

Method from org.apache.fop.fo.expr.RoundFunction Detail:

 public Property eval(Property[] args,
    PropertyInfo pInfo) throws PropertyException {
        Number dbl = args[0].getNumber();
        if (dbl == null) {
            throw new PropertyException("Non number operand to round function");
        }
        double n = dbl.doubleValue();
        double r = Math.floor(n + 0.5);
        if (r == 0.0 && n <  0.0) {
            r = -r;    // round(-0.2) returns -0 not 0
        }
        return NumberProperty.getInstance(r);
}

 public int nbArgs() {
        return 1;
}