Search moodle.org's
Developer Documentation

See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 4.1.x will end 13 November 2023 (12 months).
  • Bug fixes for security issues in 4.1.x will end 10 November 2025 (36 months).
  • PHP version: minimum PHP 7.4.0 Note: minimum PHP version has increased since Moodle 4.0. PHP 8.0.x is supported too.
/lib/phpspreadsheet/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Engineering/ -> BesselI.php (source)

[Source view]

Differences Between: [Versions 400 and 401] [Versions 401 and 402] [Versions 401 and 403]

(no description)

File Size: 145 lines (5 kb)
Included or required:0 times
Referenced: 0 times
Includes or requires: 0 files

Defines 1 class

BesselI:: (5 methods):
  BESSELI()
  calculate()
  besselI0()
  besselI1()
  besselI2()


Class: BesselI  - X-Ref

BESSELI($x, $ord)   X-Ref
BESSELI.

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

param: mixed $x A float value at which to evaluate the function.
param: mixed $ord The integer order of the Bessel function.
return: array|float|string Result, or a string containing an error

calculate(float $x, int $ord)   X-Ref
No description

besselI0(float $x)   X-Ref
No description

besselI1(float $x)   X-Ref
No description

besselI2(float $x, int $ord)   X-Ref
No description