public static int calculateDigitCount ( long value ) { if ( value < 0 ) { if ( value != Long . MIN_VALUE ) { return calculateDigitCount ( - value ) + 1 ; } else { return 20 ; } } return ( value < 10 ? 1 : ( value < 100 ? 2 : ( value < 1000 ? 3 : ( value < 10000 ? 4 : ( ( int ) ( Math . log ( value ) / LOG_10 ) + 1 ) ) ) ) ) ; }
Calculates the number of decimal digits for the given value including the sign .