Return the largest integral value with magnitude less than or equal to {expr} as a |Float| (truncate towards zero). {expr} must evaluate to a |Float| or a |Number|. Examples: echo trunc(1.456) 1.0 echo trunc(-5.456) -5.0 echo trunc(4.0) 4.0 Can also be used as a |method|: Compute()->trunc() {only available when compiled with the |+float| feature}