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Erf:: (3 methods):
ERF()
ERFPRECISE()
erfValue()
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]) param: mixed $lower Lower bound float for integrating ERF param: mixed $upper Upper bound float for integrating ERF. return: array|float|string |
ERFPRECISE($limit) X-Ref |
ERFPRECISE. Returns the error function integrated between the lower and upper bound arguments. Excel Function: ERF.PRECISE(limit) param: mixed $limit Float bound for integrating ERF, other bound is zero return: array|float|string |
erfValue($value) X-Ref |
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