org.apache.poi.ss.formula.functions
Class NumericFunction

java.lang.Object
  org.apache.poi.ss.formula.functions.NumericFunction

All Implemented Interfaces:

Function

public abstract class NumericFunction
extends java.lang.Object
implements Function

Author:

Amol S. Deshmukh < amolweb at ya hoo dot com >, Josh Micich, Stephen Wolke (smwolke at geistig.com)

Nested Class Summary

static class	NumericFunction.OneArg
static class	NumericFunction.TwoArg

Field Summary

static Function	ABS
static Function	ACOS
static Function	ACOSH
static Function	ASIN
static Function	ASINH
static Function	ATAN
static Function	ATAN2
static Function	ATANH
static Function	CEILING
static Function	COMBIN
static Function	COS
static Function	COSH
static Function	DEGREES
static Function	DOLLAR
static Function	EXP
static Function	FACT
static Function	FLOOR
static Function	INT
static Function	LN
static Function	LOG
static Function	LOG10
static Function	MOD
static Function	PI
static Function	POISSON
static Function	POWER
static Function	RADIANS
static Function	RAND
static Function	ROUND
static Function	ROUNDDOWN
static Function	ROUNDUP
static Function	SIGN
static Function	SIN
static Function	SINH
static Function	SQRT
static Function	TAN
static Function	TANH
static Function	TRUNC

Constructor Summary

NumericFunction()

Method Summary

static void	checkValue(double result)
protected abstract double	eval(ValueEval[] args, int srcCellRow, int srcCellCol)
ValueEval	evaluate(ValueEval[] args, int srcCellRow, int srcCellCol)
protected static double	singleOperandEvaluate(ValueEval arg, int srcRowIndex, int srcColumnIndex)

Methods inherited from class java.lang.Object

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

Field Detail

ABS

public static final Function ABS

ACOS

public static final Function ACOS

ACOSH

public static final Function ACOSH

ASIN

public static final Function ASIN

ASINH

public static final Function ASINH

ATAN

public static final Function ATAN

ATANH

public static final Function ATANH

COS

public static final Function COS

COSH

public static final Function COSH

DEGREES

public static final Function DEGREES

DOLLAR

public static final Function DOLLAR

EXP

public static final Function EXP

FACT

public static final Function FACT

INT

public static final Function INT

LN

public static final Function LN

LOG10

public static final Function LOG10

RADIANS

public static final Function RADIANS

SIGN

public static final Function SIGN

SIN

public static final Function SIN

SINH

public static final Function SINH

SQRT

public static final Function SQRT

TAN

public static final Function TAN

TANH

public static final Function TANH

ATAN2

public static final Function ATAN2

CEILING

public static final Function CEILING

COMBIN

public static final Function COMBIN

FLOOR

public static final Function FLOOR

MOD

public static final Function MOD

POWER

public static final Function POWER

ROUND

public static final Function ROUND

ROUNDDOWN

public static final Function ROUNDDOWN

ROUNDUP

public static final Function ROUNDUP

TRUNC

public static final Function TRUNC

LOG

public static final Function LOG

PI

public static final Function PI

RAND

public static final Function RAND

POISSON

public static final Function POISSON

Constructor Detail

NumericFunction

public NumericFunction()

Method Detail

singleOperandEvaluate

protected static final double singleOperandEvaluate(ValueEval arg,
                                                    int srcRowIndex,
                                                    int srcColumnIndex)
                                             throws EvaluationException

Throws:

EvaluationException

checkValue

public static final void checkValue(double result)
                             throws EvaluationException

Throws:

EvaluationException - (#NUM!) if result is NaN or Infinity

evaluate

public final ValueEval evaluate(ValueEval[] args,
                                int srcCellRow,
                                int srcCellCol)

Specified by:

evaluate in interface Function

Parameters:

args - the evaluated function arguments. Empty values are represented with BlankEval or MissingArgEval, never null.

srcCellRow - row index of the cell containing the formula under evaluation

srcCellCol - column index of the cell containing the formula under evaluation

Returns:

The evaluated result, possibly an ErrorEval, never null. Note - Excel uses the error code #NUM! instead of IEEE NaN, so when numeric functions evaluate to Double.NaN be sure to translate the result to ErrorEval.NUM_ERROR.

eval

protected abstract double eval(ValueEval[] args,
                               int srcCellRow,
                               int srcCellCol)
                        throws EvaluationException

Throws:

EvaluationException