Template:Rnd
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The below content is licensed according to Creative Commons Attribution-ShareAlike License contrary to the public domain logo at the foot of the page. It originally appeared on http://en.wikipedia.org. The original article might still be accessible here. You may be able to find a list of the article's previous contributors on the talk page. |
This template is used on 233,000+ pages. To avoid large-scale disruption and unnecessary server load, any changes to this template should first be tested in its /sandbox or /testcases subpages or in your own user subpage. The tested changes can then be added to this page in one single edit. Please consider discussing any changes on the talk page before implementing them. |
30px | Uses Lua: {{safesubst:#invoke:list|bulleted}} |
Usage
This template rounds parameter 1 by parameter 2 decimal places (goes the other way for negative rounding) and includes trailing zeros.
- {{rnd|54.376|2}} gives 54.38
- {{rnd|54.376|-1}} gives 50
- {{rnd|68.4273E12|-10}} gives Template:Rnd/e+
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:
- {{rnd|2.0004|3}} gives 2.000
- whereas {{[[Template:#expr:2.0004 round 3|#expr:2.0004 round 3]]}} gives 2
- {{rnd|0.000020004|7}} gives Template:Rnd/e−
- {{rnd|0|8}} gives 0.00000000
- {{rnd|154268|-3}} gives 154,000
- {{rnd|154568|-3}} gives 155,000
- Template:Xpsoc
- whereas Template:Xpsoc, even though Template:Xpsoc (see m:Help:Format produced by expr)
- Template:Xpsoc
- Template:Xpsoc
- Template:Xpsoc
- Template:Xpsoc
- Template:Xpsoc
- Template:Xpsoc
- Template:Xpsoc
- Template:Xpsoc
- Template:Xpsoc
As with #expr, the total number of significant digits is not more than 14:
Internal details
The markup-based version of Template:rnd uses three subtemplates:
- {{rnd/-}} — for trailing zeros
- {{rnd/e+}} — for scientific notation for numbers greater than or equal to 10^{9} or less than or equal to −10^{9}
- {{rnd/e−}} — for scientific notation for numbers greater than −10^{−4} and less than 10^{−4} but not equal to zero
The Lua-based version of {{rnd}} uses Module:Math and always has an expansion depth of 3. However, the markup-based version has an expansion depth of 9–15, which depends on the size of the numbers (integer results use depth 9, decimals use depth 12), where astronomical numbers can hit expansion depth of 15 levels, for {{rnd|56.44e33|-32}} → 5.64 × 10^{34}.
TemplateData
See the monthly error report for this template.
TemplateData for Rnd
<templatedata>{ "description": "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.", "params": {
"1": { "label": "number", "description": "The number to be rounded", "type": "number", "required": true }, "2": { "label": "decimal places", "description": "The number of decimal places, if negative the number is rounded so the last (parameter 2) digits are zero", "type": "number", "required": true }
}}</templatedata>
See also
The above documentation is transcluded from Template:Rnd/doc. (edit | history) Editors can experiment in this template's sandbox (create) and testcases (create) pages. Please add categories and interwikis to the /doc subpage. Subpages of this template. |