Description:
------------
an improper exchange of types is cause enters the one limits int for one float. exactly being the same I number, when executed with an expression the type it is raised for float and when expressed with a static number the number it remains a whole number.

Reproduce code:
---------------
var_dump( 2147483647 );     //  says: int(2147483647) 
var_dump( pow(2,31 ) - 1 ); //  says: float(2147483647) 

Expected result:
----------------
var_dump( 2147483647 );     //  int(2147483647) 
var_dump( pow(2,31 ) - 1 ); //   int(2147483647) 

Actual result:
--------------
var_dump( 2147483647 );     //  int(2147483647) 
var_dump( pow(2,31 ) - 1 ); //   int(2147483647)