yes, there are actually 3 different functions for rounding
round(example)
//will follow standard rounding rules
floor(example)
//will always round down to a whole number, ie: floor(1.99) = 1
ceiling(example)
//the opposite of floor, always rounds up
However if you plan to use this variable and modify it by decimals relatively often, I'd actually keep a second variable. Use one variable to track the 'true value' of your attribute, then the display variable which holds the rounded value for whatever functional purpose you want this attribute to have.
//starting values
example_real = 5
example_display = example_real
//modify the values
example_real = example_real*1.08+1
example_display = round(example_real)
msg("example = " + example_display + ".")
alternatively you could simply use the round function in an expression whenever you want to display the value but leave the actual variable holding a decimal, but this may be less desirable depending on how you plan to use it.