evenp

evenp( 
g_general 
) 
=> t / nil

Checks if a number is an even integer.

g_general

Number to check.

`t`	If g_general is an even integer.
`nil`	If g_general is not an even integer.

evenp( 59 )
=> nil

evenp( 60 )
=> t

evenp( 2.0 )
=> nil             ; Number is even, but not an integer.