public static int getCharacterCountDecimal ( long integerValue , int scale ) { boolean isNeg = integerValue < 0 ; // Work out how many digits will be needed for the number, adding space for the minus sign, the decimal // point and leading zeros if needed. int totalDigits = BitHackUtils . getCharacterCountInt64 ( integerValue ) ; int totalLength = totalDigits ; if ( isNeg ) { totalDigits -- ; // Minus sign already accounted for. } if ( scale > 0 ) { totalLength ++ ; // For the decimal point. if ( scale >= totalDigits ) { // For the leading zeros (+ 1 for the zero before decimal point). totalLength += ( scale - totalDigits ) + 1 ; } } else { // Add a zero for each negative point in scale totalLength -= scale ; } return totalLength ; }
Calculates the number of ASCII characters that will be needed to represent a specified signed decimal number .