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<?php
namespace PhpOffice\PhpSpreadsheet\Writer\Xlsx;
class Xlfn
{
const XLFNREGEXP = '/(?<!_xlfn[.])\\b('
// functions added with Excel 2010
. 'beta[.]dist'
. '|beta[.]inv'
. '|binom[.]dist'
. '|binom[.]inv'
. '|chisq[.]dist'
. '|chisq[.]dist[.]rt'
. '|chisq[.]inv'
. '|chisq[.]inv[.]rt'
. '|chisq[.]test'
. '|confidence[.]norm'
. '|confidence[.]t'
. '|covariance[.]p'
. '|covariance[.]s'
. '|erf[.]precise'
. '|erfc[.]precise'
. '|expon[.]dist'
. '|f[.]dist'
. '|f[.]dist[.]rt'
. '|f[.]inv'
. '|f[.]inv[.]rt'
. '|f[.]test'
. '|gamma[.]dist'
. '|gamma[.]inv'
. '|gammaln[.]precise'
. '|lognorm[.]dist'
. '|lognorm[.]inv'
. '|mode[.]mult'
. '|mode[.]sngl'
. '|negbinom[.]dist'
. '|networkdays[.]intl'
. '|norm[.]dist'
. '|norm[.]inv'
. '|norm[.]s[.]dist'
. '|norm[.]s[.]inv'
. '|percentile[.]exc'
. '|percentile[.]inc'
. '|percentrank[.]exc'
. '|percentrank[.]inc'
. '|poisson[.]dist'
. '|quartile[.]exc'
. '|quartile[.]inc'
. '|rank[.]avg'
. '|rank[.]eq'
. '|stdev[.]p'
. '|stdev[.]s'
. '|t[.]dist'
. '|t[.]dist[.]2t'
. '|t[.]dist[.]rt'
. '|t[.]inv'
. '|t[.]inv[.]2t'
. '|t[.]test'
. '|var[.]p'
. '|var[.]s'
. '|weibull[.]dist'
. '|z[.]test'
// functions added with Excel 2013
. '|acot'
. '|acoth'
. '|arabic'
. '|averageifs'
. '|binom[.]dist[.]range'
. '|bitand'
. '|bitlshift'
. '|bitor'
. '|bitrshift'
. '|bitxor'
. '|ceiling[.]math'
. '|combina'
. '|cot'
. '|coth'
. '|csc'
. '|csch'
. '|days'
. '|dbcs'
. '|decimal'
. '|encodeurl'
. '|filterxml'
. '|floor[.]math'
. '|formulatext'
. '|gamma'
. '|gauss'
. '|ifna'
. '|imcosh'
. '|imcot'
. '|imcsc'
. '|imcsch'
. '|imsec'
. '|imsech'
. '|imsinh'
. '|imtan'
. '|isformula'
. '|iso[.]ceiling'
. '|isoweeknum'
. '|munit'
. '|numbervalue'
. '|pduration'
. '|permutationa'
. '|phi'
. '|rri'
. '|sec'
. '|sech'
. '|sheet'
. '|sheets'
. '|skew[.]p'
. '|unichar'
. '|unicode'
. '|webservice'
. '|xor'
// functions added with Excel 2016
. '|forecast[.]et2'
. '|forecast[.]ets[.]confint'
. '|forecast[.]ets[.]seasonality'
. '|forecast[.]ets[.]stat'
. '|forecast[.]linear'
. '|switch'
// functions added with Excel 2019
. '|concat'
. '|countifs'
. '|ifs'
. '|maxifs'
. '|minifs'
. '|sumifs'
. '|textjoin'
// functions added with Excel 365
. '|filter'
. '|randarray'
. '|sequence'
. '|sort'
. '|sortby'
. '|unique'
. '|xlookup'
. '|xmatch'
. ')(?=\\s*[(])/i';
/**
* Prefix function name in string with _xlfn. where required.
*/
public static function addXlfn(string $funcstring): string
{
return preg_replace(self::XLFNREGEXP, '_xlfn.$1', $funcstring);
}
/**
* Prefix function name in string with _xlfn. where required.
* Leading character, expected to be equals sign, is stripped.
*/
public static function addXlfnStripEquals(string $funcstring): string
{
return self::addXlfn(substr($funcstring, 1));
}
}
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