BesselI Uses ArrayEnabled
Table of Contents
- $arrayArgumentHelper : ArrayArgumentHelper
- $zeroPointZero : float
- Sop to Scrutinizer.
- BESSELI() : array<string|int, mixed>|float|string
- BESSELI.
- evaluateArrayArguments() : array<string|int, mixed>
- Handles array argument processing when the function accepts multiple arguments, and any of them can be an array argument.
- evaluateArrayArgumentsIgnore() : array<string|int, mixed>
- Handles array argument processing when the function accepts multiple arguments, and any of them can be an array argument except for the one specified by ignore.
- evaluateArrayArgumentsSubset() : array<string|int, mixed>
- Handles array argument processing when the function accepts multiple arguments, but only the first few (up to limit) can be an array arguments.
- evaluateArrayArgumentsSubsetFrom() : array<string|int, mixed>
- Handles array argument processing when the function accepts multiple arguments, but only the last few (from start) can be an array arguments.
- evaluateSingleArgumentArray() : array<string|int, mixed>
- Handles array argument processing when the function accepts a single argument that can be an array argument.
- besselI0() : float
- besselI1() : float
- besselI2() : float
- calculate() : float
- initialiseHelper() : void
- testFalse() : bool
Properties
$arrayArgumentHelper
private
static ArrayArgumentHelper
$arrayArgumentHelper
$zeroPointZero
Sop to Scrutinizer.
private
static float
$zeroPointZero
= 0.0
Methods
BESSELI()
BESSELI.
public
static BESSELI(mixed $x, mixed $ord) : array<string|int, mixed>|float|string
Returns the modified Bessel function In(x), which is equivalent to the Bessel function evaluated for purely imaginary arguments
Excel Function: BESSELI(x,ord)
NOTE: The MS Excel implementation of the BESSELI function is still not accurate. This code provides a more accurate calculation
Parameters
- $x : mixed
-
A float value at which to evaluate the function. If x is nonnumeric, BESSELI returns the #VALUE! error value. Or can be an array of values
- $ord : mixed
-
The integer order of the Bessel function. If ord is not an integer, it is truncated. If $ord is nonnumeric, BESSELI returns the #VALUE! error value. If $ord < 0, BESSELI returns the #NUM! error value. Or can be an array of values
Return values
array<string|int, mixed>|float|string —Result, or a string containing an error If an array of numbers is passed as an argument, then the returned result will also be an array with the same dimensions
evaluateArrayArguments()
Handles array argument processing when the function accepts multiple arguments, and any of them can be an array argument.
protected
static evaluateArrayArguments(callable $method, mixed ...$arguments) : array<string|int, mixed>
Example use for: ROUND() or DATE().
Parameters
- $method : callable
- $arguments : mixed
Return values
array<string|int, mixed> —evaluateArrayArgumentsIgnore()
Handles array argument processing when the function accepts multiple arguments, and any of them can be an array argument except for the one specified by ignore.
protected
static evaluateArrayArgumentsIgnore(callable $method, int $ignore, mixed ...$arguments) : array<string|int, mixed>
Example use for: HLOOKUP() and VLOOKUP(), where argument 1 is a matrix that needs to be treated as a database rather than as an array argument.
Parameters
- $method : callable
- $ignore : int
- $arguments : mixed
Return values
array<string|int, mixed> —evaluateArrayArgumentsSubset()
Handles array argument processing when the function accepts multiple arguments, but only the first few (up to limit) can be an array arguments.
protected
static evaluateArrayArgumentsSubset(callable $method, int $limit, mixed ...$arguments) : array<string|int, mixed>
Example use for: NETWORKDAYS() or CONCATENATE(), where the last argument is a matrix (or a series of values) that need to be treated as a such rather than as an array arguments.
Parameters
- $method : callable
- $limit : int
- $arguments : mixed
Return values
array<string|int, mixed> —evaluateArrayArgumentsSubsetFrom()
Handles array argument processing when the function accepts multiple arguments, but only the last few (from start) can be an array arguments.
protected
static evaluateArrayArgumentsSubsetFrom(callable $method, int $start, mixed ...$arguments) : array<string|int, mixed>
Example use for: Z.TEST() or INDEX(), where the first argument 1 is a matrix that needs to be treated as a dataset rather than as an array argument.
Parameters
- $method : callable
- $start : int
- $arguments : mixed
Return values
array<string|int, mixed> —evaluateSingleArgumentArray()
Handles array argument processing when the function accepts a single argument that can be an array argument.
protected
static evaluateSingleArgumentArray(callable $method, array<string|int, mixed> $values) : array<string|int, mixed>
Example use for: DAYOFMONTH() or FACT().
Parameters
- $method : callable
- $values : array<string|int, mixed>
Return values
array<string|int, mixed> —besselI0()
private
static besselI0(float $x) : float
Parameters
- $x : float
Return values
float —besselI1()
private
static besselI1(float $x) : float
Parameters
- $x : float
Return values
float —besselI2()
private
static besselI2(float $x, int $ord) : float
Parameters
- $x : float
- $ord : int
Return values
float —calculate()
private
static calculate(float $x, int $ord) : float
Parameters
- $x : float
- $ord : int
Return values
float —initialiseHelper()
private
static initialiseHelper(array<string|int, mixed>|false $arguments) : void
Parameters
- $arguments : array<string|int, mixed>|false
-
Can be changed to array for Php8.1+
Return values
void —testFalse()
private
static testFalse(mixed $value) : bool
Parameters
- $value : mixed