34            return $e->getMessage();
 
   37        if (($value < 0) || ($mean < 0)) {
 
   43            $floor = floor($value);
 
   44            for (
$i = 0; 
$i <= $floor; ++
$i) {
 
   48            return exp(0 - $mean) * $summer;
 
An exception for terminatinating execution or to throw for unit testing.
static flattenSingleValue($value='')
Convert an array to a single scalar value by extracting the first element.
static fact($factVal)
FACT.
static distribution($value, $mean, $cumulative)
POISSON.
static validateFloat($value)
static validateBool($value)