Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl.function.numeric;

import org.apache.commons.lang3.Range;

import org.gvsig.expressionevaluator.Interpreter;

import org.gvsig.expressionevaluator.spi.AbstractFunction;

public class CeilFunction extends AbstractFunction {

    public CeilFunction() {

        super("Numeric", "CEIL", Range.is(1),

            "Returns the smallest (closest to negative infinity) double value that is greater than or equal to the argument and is equal to a mathematical integer. Special cases:\n" +

            "- If the argument value is already equal to a mathematical integer, then the result is the same as the argument.\n" +

            "- If the argument is NaN or an infinity or positive zero or negative zero, then the result is the same as the argument.\n" +

            "- If the argument value is less than zero but greater than -1.0, then the result is negative zero.\n" +

            "Note that the value of Math.ceil(x) is exactly the value of -Math.floor(-x).",

            "CEIL({{a}})",

            new String[]{

                "a - a value."

            },

            "Double"

        );

        this.addAlias("CEILING");

    }

    @Override

    public Object call(Interpreter interpreter, Object[] args) {

        double r = Math.ceil(getDouble(args, 0));

        return r;

    }

}