//Title: Miscellaneous Logical Utilities Snippet
//Credit to: Jtgibson
//Contributed by: Jtgibson


/*
These are a couple of logical number operations that are useful in some circum-
stances.  You use them in if() statements for the most part, though you might be
able to find creative uses for them as well.
*/


#define ispos(num)  ((num) >= 0)
#define isneg(num)  ((num) < 0)
#define iseven(num) !((num) % 2)
#define isodd(num)  ((num) % 2)


/*
//Testing code/sample implementation:

mob/verb/test_logic(num as num)
    if(ispos(num))
        if(iseven(num))
            usr << "Your number is positive and even."

        //if(isodd(num)) isn't necessary, but I'm demonstrating the use
        else if(isodd(num))
            usr << "Your number is positive and odd."

    else if(isneg(num))
        if(iseven(num))
            usr << "Your number is negative and even."

        else if(isodd(num))
            usr << "Your number is negative and odd."
*/