PHP Class DaveChild\TextStatistics\Maths

Protected Properties

Property	Type	Description
$blnBcmath	boolean	Efficiency: Is the BC Math extension loaded?

Method	Description
bcCalc ( mixed $number1, string $action, mixed $number2, boolean $round = false, integer $decimals, integer $precision = 10 ) : mixed	Do simple reliable floating point calculations without the risk of wrong results
normaliseOperator ( string $operator ) : string	Normalise operators for bcMath function.
normaliseScore ( integer \| float $score, integer $min, integer $max, $dps = 1 ) : integer \| float	Normalises score according to min & max allowed. If score larger than max, max is returned. If score less than min, min is returned.

Method	Description
performCalc ( string \| integer \| float \| boolean $number1, string $action, string \| integer \| float \| boolean $number2, boolean $round, integer $decimals, integer $precision ) : integer \| float \| boolean	Function which performs calculation.

Do simple reliable floating point calculations without the risk of wrong results

See also: http://floating-point-gui.de/

See also: the big red warning on http://php.net/language.types.float.php

public static bcCalc ( mixed $number1, string $action, mixed $number2, boolean $round = false, integer $decimals, integer $precision = 10 ) : mixed
$number1	mixed	Scalar (string/int/float/bool)
$action	string	Calculation action to execute. Valid input: '+' or 'add' or 'addition', '-' or 'sub' or 'subtract', '*' or 'mul' or 'multiply', '/' or 'div' or 'divide', '%' or 'mod' or 'modulus' '=' or 'comp' or 'compare'
$number2	mixed	Scalar (string/int/float/bool)
$round	boolean	Whether or not to round the result. Defaults to false. Will be disregarded for a compare operation
$decimals	integer	Decimals for rounding operation. Defaults to 0.
$precision	integer	Calculation precision. Defaults to 10.
return	mixed	Calculation result or false if either or the numbers isn't scalar or an invalid operation was passed - for compare the result will always be an integer - for all other operations, the result will either be an integer (preferred) or a float

Normalise operators for bcMath function.

public static normaliseOperator ( string $operator ) : string
$operator	string	Operators such as "+", "add"
return	string

Also rounds result to specified precision. Thanks to github.com/lvil.

public static normaliseScore ( integer \| float $score, integer $min, integer $max, $dps = 1 ) : integer \| float
$score	integer \| float	Initial score
$min	integer	Minimum score allowed
$max	integer	Maximum score allowed
return	integer \| float

Efficiency: Is the BC Math extension loaded?

protected static bool $blnBcmath
return	boolean