PHPOffice /
PhpSpreadsheet
| @@ 82-84 (lines=3) @@ | ||
| 79 | */ |
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| 80 | private static function beta($p, $q) |
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| 81 | { |
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| 82 | if ($p <= 0.0 || $q <= 0.0 || ($p + $q) > LOG_GAMMA_X_MAX_VALUE) { |
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| 83 | return 0.0; |
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| 84 | } |
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| 85 | ||
| 86 | return exp(self::logBeta($p, $q)); |
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| 87 | } |
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| @@ 112-114 (lines=3) @@ | ||
| 109 | return 0.0; |
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| 110 | } elseif ($x >= 1.0) { |
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| 111 | return 1.0; |
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| 112 | } elseif (($p <= 0.0) || ($q <= 0.0) || (($p + $q) > LOG_GAMMA_X_MAX_VALUE)) { |
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| 113 | return 0.0; |
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| 114 | } |
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| 115 | $beta_gam = exp((0 - self::logBeta($p, $q)) + $p * log($x) + $q * log(1.0 - $x)); |
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| 116 | if ($x < ($p + 1.0) / ($p + $q + 2.0)) { |
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| 117 | return $beta_gam * self::betaFraction($x, $p, $q) / $p; |
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