class NumberConstraint

class NumberConstraint extends Constraint {
    
    /**
     * {@inheritdoc}
     */
    public function check(&$element, $schema = null, ?JsonPointer $path = null, $i = null) {
        // Verify minimum
        if (isset($schema->exclusiveMinimum)) {
            if (isset($schema->minimum)) {
                if ($schema->exclusiveMinimum && $element <= $schema->minimum) {
                    $this->addError($path, 'Must have a minimum value of ' . $schema->minimum, 'exclusiveMinimum', array(
                        'minimum' => $schema->minimum,
                    ));
                }
                elseif ($element < $schema->minimum) {
                    $this->addError($path, 'Must have a minimum value of ' . $schema->minimum, 'minimum', array(
                        'minimum' => $schema->minimum,
                    ));
                }
            }
            else {
                $this->addError($path, 'Use of exclusiveMinimum requires presence of minimum', 'missingMinimum');
            }
        }
        elseif (isset($schema->minimum) && $element < $schema->minimum) {
            $this->addError($path, 'Must have a minimum value of ' . $schema->minimum, 'minimum', array(
                'minimum' => $schema->minimum,
            ));
        }
        // Verify maximum
        if (isset($schema->exclusiveMaximum)) {
            if (isset($schema->maximum)) {
                if ($schema->exclusiveMaximum && $element >= $schema->maximum) {
                    $this->addError($path, 'Must have a maximum value of ' . $schema->maximum, 'exclusiveMaximum', array(
                        'maximum' => $schema->maximum,
                    ));
                }
                elseif ($element > $schema->maximum) {
                    $this->addError($path, 'Must have a maximum value of ' . $schema->maximum, 'maximum', array(
                        'maximum' => $schema->maximum,
                    ));
                }
            }
            else {
                $this->addError($path, 'Use of exclusiveMaximum requires presence of maximum', 'missingMaximum');
            }
        }
        elseif (isset($schema->maximum) && $element > $schema->maximum) {
            $this->addError($path, 'Must have a maximum value of ' . $schema->maximum, 'maximum', array(
                'maximum' => $schema->maximum,
            ));
        }
        // Verify divisibleBy - Draft v3
        if (isset($schema->divisibleBy) && $this->fmod($element, $schema->divisibleBy) != 0) {
            $this->addError($path, 'Is not divisible by ' . $schema->divisibleBy, 'divisibleBy', array(
                'divisibleBy' => $schema->divisibleBy,
            ));
        }
        // Verify multipleOf - Draft v4
        if (isset($schema->multipleOf) && $this->fmod($element, $schema->multipleOf) != 0) {
            $this->addError($path, 'Must be a multiple of ' . $schema->multipleOf, 'multipleOf', array(
                'multipleOf' => $schema->multipleOf,
            ));
        }
        $this->checkFormat($element, $schema, $path, $i);
    }
    private function fmod($number1, $number2) {
        $modulus = $number1 - round($number1 / $number2) * $number2;
        $precision = 1.0E-10;
        if (-$precision < $modulus && $modulus < $precision) {
            return 0.0;
        }
        return $modulus;
    }

}