org.apache.poi.ss.formula.functions

Class Bin2Dec

java.lang.Object

org.apache.poi.ss.formula.functions.Fixed1ArgFunction

org.apache.poi.ss.formula.functions.Bin2Dec

All Implemented Interfaces:

FreeRefFunction, Function, Function1Arg

public class Bin2Dec
extends Fixed1ArgFunction
implements FreeRefFunction

Implementation for Excel Bin2Dec() function.

Syntax:
Bin2Dec (number)

Converts a binary number to decimal.

Number is the binary number you want to convert. Number cannot contain more than 10 characters (10 bits). The most significant bit of number is the sign bit. The remaining 9 bits are magnitude bits. Negative numbers are represented using two's-complement notation.

Remark If number is not a valid binary number, or if number contains more than 10 characters (10 bits), BIN2DEC returns the #NUM! error value.

Author:

cedric dot walter @ gmail dot com

Field Summary

Fields

Modifier and Type	Field and Description
static FreeRefFunction	instance

Constructor Summary

Constructors

Constructor and Description
Bin2Dec()

Method Summary

Modifier and Type	Method and Description
ValueEval	evaluate(int srcRowIndex, int srcColumnIndex, ValueEval numberVE) see Function.evaluate(ValueEval[], int, int)
ValueEval	evaluate(ValueEval[] args, OperationEvaluationContext ec)

Methods inherited from class org.apache.poi.ss.formula.functions.Fixed1ArgFunction

evaluate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

instance

public static final FreeRefFunction instance

Constructor Detail

Bin2Dec

public Bin2Dec()

Method Detail

evaluate

public ValueEval evaluate(int srcRowIndex,
                          int srcColumnIndex,
                          ValueEval numberVE)

Description copied from interface: Function1Arg

see Function.evaluate(ValueEval[], int, int)

Specified by:

evaluate in interface Function1Arg

evaluate

public ValueEval evaluate(ValueEval[] args,
                          OperationEvaluationContext ec)

Specified by:

evaluate in interface FreeRefFunction

Parameters:

args - the pre-evaluated arguments for this function. args is never null, nor are any of its elements.

ec - primarily used to identify the source cell containing the formula being evaluated. may also be used to dynamically create reference evals.

Returns:

never null. Possibly an instance of ErrorEval in the case of a specified Excel error (Exceptions are never thrown to represent Excel errors).