PHPExcel_Calculation_MathTrig

category PHPExcel PHPExcel_Calculation Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)

## ATAN2

ATAN2(float \$xCoordinate, float \$yCoordinate) : float
Static

This function calculates the arc tangent of the two variables x and y. It is similar to calculating the arc tangent of y ÷ x, except that the signs of both arguments are used to determine the quadrant of the result. The arctangent is the angle from the x-axis to a line containing the origin (0, 0) and a point with coordinates (xCoordinate, yCoordinate). The angle is given in radians between -pi and pi, excluding -pi.

Note that the Excel ATAN2() function accepts its arguments in the reverse order to the standard PHP atan2() function, so we need to reverse them here before calling the PHP atan() function.

Excel Function: ATAN2(xCoordinate,yCoordinate)

access public Mathematical and Trigonometric Functions

### Parameters

#### \$xCoordinate

float

The x-coordinate of the point.

#### \$yCoordinate

float

The y-coordinate of the point.

### Returns

floatThe inverse tangent of the specified x- and y-coordinates.

## CEILING

CEILING(float \$number, float \$significance) : float
Static

Returns number rounded up, away from zero, to the nearest multiple of significance. For example, if you want to avoid using pennies in your prices and your product is priced at \$4.42, use the formula =CEILING(4.42,0.05) to round prices up to the nearest nickel.

Excel Function: CEILING(number[,significance])

access public Mathematical and Trigonometric Functions

### Parameters

#### \$number

float

The number you want to round.

#### \$significance

float

The multiple to which you want to round.

### Returns

floatRounded Number

## COMBIN

COMBIN(int \$numObjs, int \$numInSet) : int
Static

Returns the number of combinations for a given number of items. Use COMBIN to determine the total possible number of groups for a given number of items.

Excel Function: COMBIN(numObjs,numInSet)

access public Mathematical and Trigonometric Functions

### Parameters

#### \$numObjs

int

Number of different objects

#### \$numInSet

int

Number of objects in each combination

### Returns

intNumber of combinations

## EVEN

EVEN(float \$number) : int
Static

Returns number rounded up to the nearest even integer. You can use this function for processing items that come in twos. For example, a packing crate accepts rows of one or two items. The crate is full when the number of items, rounded up to the nearest two, matches the crate's capacity.

Excel Function: EVEN(number)

access public Mathematical and Trigonometric Functions

float

Number to round

### Returns

intRounded Number

## FACT

FACT(float \$factVal) : int
Static

Returns the factorial of a number. The factorial of a number is equal to 123... number.

Excel Function: FACT(factVal)

access public Mathematical and Trigonometric Functions

float

Factorial Value

intFactorial

## FACTDOUBLE

FACTDOUBLE(float \$factVal) : int
Static

Returns the double factorial of a number.

Excel Function: FACTDOUBLE(factVal)

access public Mathematical and Trigonometric Functions

float

Factorial Value

### Returns

intDouble Factorial

## FLOOR

FLOOR(float \$number, float \$significance) : float
Static

Rounds number down, toward zero, to the nearest multiple of significance.

Excel Function: FLOOR(number[,significance])

access public Mathematical and Trigonometric Functions

float

Number to round

float

Significance

### Returns

floatRounded Number

## GCD

GCD() : integer
Static

Returns the greatest common divisor of a series of numbers. The greatest common divisor is the largest integer that divides both number1 and number2 without a remainder.

Excel Function: GCD(number1[,number2[, ...]])

access public Mathematical and Trigonometric Functions

### Returns

integerGreatest Common Divisor

## INT

INT(float \$number) : integer
Static

Casts a floating point value to an integer

Excel Function: INT(number)

access public Mathematical and Trigonometric Functions

### Parameters

#### \$number

float

Number to cast to an integer

### Returns

integerInteger value

## LCM

LCM() : int
Static

Returns the lowest common multiplier of a series of numbers The least common multiple is the smallest positive integer that is a multiple of all integer arguments number1, number2, and so on. Use LCM to add fractions with different denominators.

Excel Function: LCM(number1[,number2[, ...]])

access public Mathematical and Trigonometric Functions

### Returns

intLowest Common Multiplier

## LOG_BASE

LOG_BASE(float \$number, float \$base) : float
Static

Returns the logarithm of a number to a specified base. The default base is 10.

Excel Function: LOG(number[,base])

access public Mathematical and Trigonometric Functions

### Parameters

#### \$number

float

The positive real number for which you want the logarithm

#### \$base

float

The base of the logarithm. If base is omitted, it is assumed to be 10.

float

## MDETERM

MDETERM(array \$matrixValues) : float
Static

Returns the matrix determinant of an array.

Excel Function: MDETERM(array)

access public Mathematical and Trigonometric Functions

### Parameters

#### \$matrixValues

array

A matrix of values

float

## MINVERSE

MINVERSE(array \$matrixValues) : array
Static

Returns the inverse matrix for the matrix stored in an array.

Excel Function: MINVERSE(array)

access public Mathematical and Trigonometric Functions

### Parameters

#### \$matrixValues

array

A matrix of values

array

## MMULT

MMULT(array \$matrixData1, array \$matrixData2) : array
Static

### Parameters

#### \$matrixData1

array

A matrix of values

#### \$matrixData2

array

A matrix of values

array

## MOD

MOD(int \$a, int \$b) : int
Static

int

Dividend

int

Divisor

intRemainder

## MROUND

MROUND(float \$number, int \$multiple) : float
Static

Rounds a number to the nearest multiple of a specified value

### Parameters

float

Number to round

#### \$multiple

int

Multiple to which you want to round \$number

### Returns

floatRounded Number

## MULTINOMIAL

MULTINOMIAL() : float
Static

Returns the ratio of the factorial of a sum of values to the product of factorials.

float

## ODD

ODD(float \$number) : int
Static

Returns number rounded up to the nearest odd integer.

float

Number to round

### Returns

intRounded Number

## POWER

POWER(float \$x, float \$y) : float
Static

Computes x raised to the power y.

float

float

float

## PRODUCT

PRODUCT() : float
Static

PRODUCT returns the product of all the values and cells referenced in the argument list.

Excel Function: PRODUCT(value1[,value2[, ...]])

access public Mathematical and Trigonometric Functions

float

## QUOTIENT

QUOTIENT() : float
Static

QUOTIENT function returns the integer portion of a division. Numerator is the divided number and denominator is the divisor.

Excel Function: QUOTIENT(value1[,value2[, ...]])

access public Mathematical and Trigonometric Functions

float

## RAND

RAND(int \$min, int \$max) : int
Static

int

Minimal value

int

Maximal value

intRandom number

## ROMAN()

ROMAN(\$aValue, \$style)
Static

## ROUNDDOWN

ROUNDDOWN(float \$number, int \$digits) : float
Static

Rounds a number down to a specified number of decimal places

### Parameters

float

Number to round

#### \$digits

int

Number of digits to which you want to round \$number

### Returns

floatRounded Number

## ROUNDUP

ROUNDUP(float \$number, int \$digits) : float
Static

Rounds a number up to a specified number of decimal places

### Parameters

float

Number to round

#### \$digits

int

Number of digits to which you want to round \$number

### Returns

floatRounded Number

## SERIESSUM

SERIESSUM() : float
Static

Returns the sum of a power series

float

## SIGN

SIGN(float \$number) : int
Static

Determines the sign of a number. Returns 1 if the number is positive, zero (0) if the number is 0, and -1 if the number is negative.

float

Number to round

intsign value

## SQRTPI

SQRTPI(float \$number) : float
Static

Returns the square root of (number * pi).

float

Number

### Returns

floatSquare Root of Number * Pi

## SUBTOTAL

SUBTOTAL() : float
Static

Returns a subtotal in a list or database.

float

## SUM

SUM() : float
Static

SUM computes the sum of all the values and cells referenced in the argument list.

Excel Function: SUM(value1[,value2[, ...]])

access public Mathematical and Trigonometric Functions

float

## SUMIF

SUMIF(\$aArgs, string \$condition, \$sumArgs) : float
Static

Counts the number of cells that contain numbers within the list of arguments

Excel Function: SUMIF(value1[,value2[, ...]],condition)

access public Mathematical and Trigonometric Functions

### Parameters

#### \$condition

string

The criteria that defines which cells will be summed.

float

## SUMPRODUCT

SUMPRODUCT() : float
Static

Excel Function: SUMPRODUCT(value1[,value2[, ...]])

access public Mathematical and Trigonometric Functions

float

## SUMSQ

SUMSQ() : float
Static

SUMSQ returns the sum of the squares of the arguments

Excel Function: SUMSQ(value1[,value2[, ...]])

access public Mathematical and Trigonometric Functions

float

## SUMX2MY2

SUMX2MY2(mixed[] \$matrixData1, mixed[] \$matrixData2) : float
Static

mixed[]

Matrix #1

mixed[]

Matrix #2

float

## SUMX2PY2

SUMX2PY2(mixed[] \$matrixData1, mixed[] \$matrixData2) : float
Static

mixed[]

Matrix #1

mixed[]

Matrix #2

float

## SUMXMY2

SUMXMY2(mixed[] \$matrixData1, mixed[] \$matrixData2) : float
Static

mixed[]

Matrix #1

mixed[]

Matrix #2

float

## TRUNC

TRUNC(float \$value, int \$digits) : float
Static

Truncates value to the number of fractional digits by number_digits.

float

int

### Returns

floatTruncated value

## _factors()

_factors(\$value)
Static

## _romanCut()

_romanCut(\$num, \$n)
Static