round

rat.round â integer
rat.round(precision=0) â rational

Instance Public methods

Returns the truncated value (toward the nearest integer; 0.5 => 1; -0.5 => -1).

Rational(3).round      #=> 3
Rational(2, 3).round   #=> 1
Rational(-3, 2).round  #=> -2
 
       decimal      -  1  2  3 . 4  5  6
                      ^  ^  ^  ^   ^  ^
      precision      -3 -2 -1  0  +1 +2
 
'%f' % Rational('-123.456').round(+1)  #=> "-123.500000"
'%f' % Rational('-123.456').round(-1)  #=> "-120.000000"

doc_ruby_on_rails

2025-01-10 15:47:30

Comments

Popular Articles

round() round(number[, ndigits]) Return the floating point value number rounded to ndigits digits after the decimal point. If ndigits is omitted, it retur

round (PHP 4, PHP 5, PHP 7) Rounds a float float round ( float $val [, int $precision = 0 [, int $mode

round int.round([ndigits]) â integer or float Instance Public methods Rounds flt to a given precision in decimal digits (default 0 digits).

round num.round([ndigits]) â integer or float Instance Public methods Rounds num to a given precision in decimal digits (default 0 digits).

round Defined in header <math.h> float roundf( float arg ); (1) (since C99) double round( double arg ); (2) (since C99)