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<?php |
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namespace TablePress\PhpOffice\PhpSpreadsheet\Calculation\Engineering; |
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|
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use TablePress\PhpOffice\PhpSpreadsheet\Calculation\ArrayEnabled; |
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use TablePress\PhpOffice\PhpSpreadsheet\Calculation\Exception; |
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|
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class Compare |
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{ |
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use ArrayEnabled; |
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|
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/** |
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* DELTA. |
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* |
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* Excel Function: |
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* DELTA(a[,b]) |
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* |
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* Tests whether two values are equal. Returns 1 if number1 = number2; returns 0 otherwise. |
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* Use this function to filter a set of values. For example, by summing several DELTA |
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* functions you calculate the count of equal pairs. This function is also known as the |
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* Kronecker Delta function. |
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* |
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* @param array<mixed>|bool|float|int|string $a the first number |
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* Or can be an array of values |
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* @param array<mixed>|bool|float|int|string $b The second number. If omitted, b is assumed to be zero. |
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* Or can be an array of values |
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* |
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* @return array<mixed>|int|string (string in the event of an error) |
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* If an array of numbers is passed as an argument, then the returned result will also be an array |
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* with the same dimensions |
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*/ |
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public static function DELTA($a, $b = 0.0) |
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{ |
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if (is_array($a) || is_array($b)) { |
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return self::evaluateArrayArguments([self::class, __FUNCTION__], $a, $b); |
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} |
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|
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try { |
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$a = EngineeringValidations::validateFloat($a); |
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$b = EngineeringValidations::validateFloat($b); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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|
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return (int) (abs($a - $b) < 1.0e-15); |
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} |
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|
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/** |
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* GESTEP. |
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* |
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* Excel Function: |
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* GESTEP(number[,step]) |
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* |
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* Returns 1 if number >= step; returns 0 (zero) otherwise |
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* Use this function to filter a set of values. For example, by summing several GESTEP |
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* functions you calculate the count of values that exceed a threshold. |
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* |
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* @param array<mixed>|bool|float|int|string $number the value to test against step |
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* Or can be an array of values |
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* @param null|array<mixed>|bool|float|int|string $step The threshold value. If you omit a value for step, GESTEP uses zero. |
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* Or can be an array of values |
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* |
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* @return array<mixed>|int|string (string in the event of an error) |
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* If an array of numbers is passed as an argument, then the returned result will also be an array |
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* with the same dimensions |
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*/ |
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public static function GESTEP($number, $step = 0.0) |
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{ |
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if (is_array($number) || is_array($step)) { |
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return self::evaluateArrayArguments([self::class, __FUNCTION__], $number, $step); |
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} |
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|
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try { |
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$number = EngineeringValidations::validateFloat($number); |
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$step = EngineeringValidations::validateFloat($step ?? 0.0); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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|
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return (int) ($number >= $step); |
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} |
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} |
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