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/lib/phpspreadsheet/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Calculation/Engineering/ -> Erf.php (source)

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

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File Size: 91 lines (3 kb)
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Defines 1 class

Erf:: (3 methods):
  ERF()
  ERFPRECISE()
  erfValue()


Class: Erf  - X-Ref

ERF($lower, $upper = null)   X-Ref
ERF.

Returns the error function integrated between the lower and upper bound arguments.

Note: In Excel 2007 or earlier, if you input a negative value for the upper or lower bound arguments,
the function would return a #NUM! error. However, in Excel 2010, the function algorithm was
improved, so that it can now calculate the function for both positive and negative ranges.
PhpSpreadsheet follows Excel 2010 behaviour, and accepts negative arguments.

Excel Function:
ERF(lower[,upper])

return: float|string
param: mixed $lower Lower bound float for integrating ERF
param: mixed $upper Upper bound float for integrating ERF.

ERFPRECISE($limit)   X-Ref
ERFPRECISE.

Returns the error function integrated between the lower and upper bound arguments.

Excel Function:
ERF.PRECISE(limit)

return: float|string
param: mixed $limit Float bound for integrating ERF, other bound is zero

erfValue($value)   X-Ref
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