Mega Code Archive

Round - rounds a floating point number to an integer system unit

function Round ( const Number : Extended ) : Int64; Description The Round function rounds a floating point Number to an Integer value. The rounding uses Bankers rules, where an exact half value causes a rounding to an even number: 12.4 rounds to 12 12.5 rounds to 12 // Round down to even 12.6 rounds to 13 13.4 rounds to 13 13.5 rounds to 14 // Round up to even 13.6 rounds to 14 Notes The Trunc function does the same, but returns the integer in an Integer value. Related commands Frac The fractional part of a floating point number Int The integer part of a floating point number as a float Trunc The integer part of a floating point number Example code : A simple example begin ShowMessage('Round(12.75) = '+IntToStr(Round(12.75))); ShowMessage('Trunc(12.75) = '+IntToStr(Trunc(12.75))); ShowMessage(' Int(12.75) = '+FloatToStr(Int(12.75))); ShowMessage(' Frac(12.75) = '+FloatToStr(Frac(12.75))); end; Show full unit code Round(12.75) = 13 Trunc(12.75) = 12 Int(12.75) = 12 Frac(12.75) = 0.75