टेम्पलेट: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 "123.4560""{{round|123.456|3}}"gives "123.456""{{round|123.456|2}}"gives "123.46""{{round|123.456|1}}"gives "123.5""{{round|123.456|0}}"gives "123""{{round|123.456|-1}}"gives "120""{{round|123.456|-2}}"gives "100""{{round|123.456|-3}}"gives "0"
"{{round|123456.789}}"→ "123,457""{{round|12345.6789}}"→ "12,346""{{round|1234.56789}}"→ "1,235""{{round|123.456789}}"→ "123""{{round|12.3456789}}"→ "12""{{round|1.23456789}}"→ "1""{{round|.123456789}}"→ "0""{{round|.0123456789}}"→ "0""{{round|.00123456789}}"→ "0"
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: