Template:Rnd/doc
Jump to navigation
Jump to search
This is a documentation subpage for Template:Rnd. It contains usage information, categories, interlanguage links and other content that is not part of the original template page. |
Usage
This template rounds {{{1}}} to {{{2}}} decimal places (goes the other way for negatives) and includes trailing zeros. Scientific notation is used for numbers greater than or equal to 1×109, or less than 1×10−4.
Compare:
- {{
rnd|2.0004|3
}} gives 2.000- whereas {{
#expr:2.0004 round 3
}} gives 2
- whereas {{
- {{
rnd|0.000020004|7
}} gives 2.00×10−5 - {{
rnd|0|8
}} gives 0.00000000 - {{
rnd|154268|-3
}} gives 154,000 {{rnd|1200004|-1}}
→ 1,200,000- whereas
{{#expr:1200004round-1}}
→ 1200000, even though{{#expr:1300004round-1}}
→ 1300000 (see m:Help:Format produced by expr)
- whereas
{{rnd|1300004|-1}}
→ 1,300,000{{rnd|4.1e6|9}}
→ 4,100,000.000000000{{rnd|4.1e6|10}}
→ 4,100,000.0000000000{{rnd|1542689271|-7}}
→ 1.54×109{{rnd|1542689271|2}}
→ 1.54268927100×109{{rnd|7e9|-9}}
→ 7×109{{rnd|-123|1}}
→ −123.0{{rnd|-1200007|-2}}
→ −1,200,000{{rnd|-1234567899|-7}}
→ −1.23×109
As with #expr, the total number of significant digits is not more than 14:
{{rnd|1234567890.123456789|10}}
→ 1.2345678901235×109{{rnd|123456789.0123456789|10}}
→ 123,456,789.0123500000{{rnd|.0001234567890123456789|20}}
→ 0.00012345678901235
Internal details
The template calls Template:Rnd/b1 if the number, after rounding, is positive, Template:Rnd/b-1 if it is negative, and Template:Rnd/b0 if it is zero.
Their first parameter is the rounded number, their second the rounding parameter, and their third the value of the condition that the rounding parameter is positive.