Template:Round/doc
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 | This is a documentation subpage for Template:Round. It contains usage information, categories and other content that is not part of the original page. |
 | This template is used on approximately 264,000 pages, or roughly 12505% of all pages. To avoid major disruption and server load, any changes should be tested in the template's /sandbox or /testcases subpages, or in your own user subpage. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them. |
 | This template uses Lua: |
Usage
This template rounds parameter 1 by parameter 2 decimal places (goes the other way for negative rounding) and includes trailing zeros.
{{Round|54.376|2}}→ 54.38{{Round|54.376|-1}}→ 50{{Round|68.4273E12|-10}}→ 6.843×1013
For example, rounding by 1 gives 1 decimal digit, rounding by 0 gives integers, or rounding by -2 gives the amount in hundreds. Scientific notation is displayed for numbers greater than or equal to 1Template:E, or less than 1Template:E.
Examples
{{Round|2.0004|3}}→ 2.000- Template:Pf → 2
{{Round|0.000020004|7}}→ 000{{Round|0|8}}→ 0.00000000{{Round|154268|-3}}→ 154,000{{Round|154568|-3}}→ 155,000{{Round|1200004|-1}}→ 1,200,000- whereas Template:Pf → 1200000, even though Template:Pf → 1300000 (see m:Help:Format produced by expr)
{{Round|1300004|-1}}→ 1,300,000{{Round|4.1e6|9}}→ 4,100,000.000000000{{Round|4.1e6|10}}→ 4,100,000.0000000000{{Round|1542689271|-7}}→ 1.54×109{{Round|1542689271|2}}→ 1.54268927100×109{{Round|7e9|-9}}→ 7×109{{Round|-123|1}}→ −123.0{{Round|-1200007|-2}}→ −1,200,000{{Round|-1234567899|-7}}→ −1.23×109
As with #expr, the total number of significant digits is not more than 14:
{{Round|1234567890.123456789|10}}→ 1.2345678901235×109{{Round|123456789.0123456789|10}}→ 123,456,789.01235{{Round|.0001234567890123456789|20}}→ 0.00012345678901235
- The second parameter, precision, should be an integer. Non-integer may give unexpected result.
{{Round|1.234567}}→ 1{{Round|1.234567|2}}→ 1.23{{Round|1.234567|2.3}}→ 1.2329205947231{{Round|1.234567|2.7}}→ 1.2350673729657
TemplateData
This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. Click here to see a monthly parameter usage report for this template based on this TemplateData.
TemplateData for Round
Rounds (parameter 1) by (parameter 2) decimal places, and formats. Scientific notation is used for numbers greater than 1×10^9, or less than 1×10^−4.
| Parameter | Description | Type | Status | |
|---|---|---|---|---|
| number | 1 | The number to be rounded | Number | required |
| decimal places | 2 | The number of decimal places, if negative the number is rounded so the last (parameter 2) digits are zero | Number | required |
Maintenance categories
See also
- {{Rounded calculation}}
- {{Significant figures}}
- {{Roundup}}
- {{Rounddown}}
