src/Chippyash/Math/Type/Calculator/Native.php
public function intAdd(NI $a, NI $b)
    {
        list($a, $b) = $this->checkIntTypes($a, $b);

        return new IntType($a() + $b());
    }
public function intAdd(NI $a, NI $b)
    {
        list($a, $b) = $this->checkIntTypes($a, $b);

        return new IntType($a() + $b());
    }
public function intAdd ( NI $ a , NI $ b ) { list ( $ a , $ b ) = $ this -> checkIntTypes ( $ a , $ b ) ; return new IntType ( $ a ( ) + $ b ( ) ) ; }
Integer type addition

@param  NI $a first operand
@param  NI $b second operand

@return IntType
Integer type addition