Шаблон:Round
This templates rounds parameter 1 to the number of digits after the point optionally given as parameter 2. If parameter 2 is negative, rounding is to a multiple of 10. If parameter 2 is undefined, numbers with 4 digits before the point are rounded to integers, numbers with 3 digits before the point are rounded to 1 digit after the point, numbers with 2 digits before the point are rounded to 2 digits after the point, and numbers with 1 digit before the point or none are rounded to 3 digits after the point.
In other words, if parameter 2 is undefined, rounding is to 4 significant digits, except that it is not cruder than rounding to an integer and not finer than rounding to three digits after the decimal point.
Examples:
"{{round|123.456|4}}"gives "123.456" [1]"{{round|123.456|3}}"gives "123.456" [2]"{{round|123.456|2}}"gives "123.46" [3]"{{round|123.456|1}}"gives "123.5" [4]"{{round|123.456|0}}"gives "123" [5]"{{round|123.456|-1}}"gives "120" [6]"{{round|123.456|-2}}"gives "100" [7]"{{round|123.456|-3}}"gives "0" [8]
"{{round|123456.789}}"→ "123457" [9]"{{round|12345.6789}}"→ "12346" [10]"{{round|1234.56789}}"→ "1235" [11]"{{round|123.456789}}"→ "123.5" [12]"{{round|12.3456789}}"→ "12.35" [13]"{{round|1.23456789}}"→ "1.235" [14]"{{round|.123456789}}"→ "0.123" [15]"{{round|.0123456789}}"→ "0.012" [16]"{{round|.00123456789}}"→ "0.001" [17]
Note that trailing zeros are not shown, so rounding can seem cruder than has actually been applied:
While this is a limitation of the template (normally there would be trailing zeros to show the precision), there is also the general problem that if a number is an integer with trailing zeros, then the precision is not clear:
"{{round|1230.4}}"→ "1230" [21]