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This template has two different functions dependent on input.
- If only one parameter is given the template counts the number of significant figures of the given number within the ranges 1012 to 10−12 and −10−12 to −1012. It ignores any digits outside this range.
- If two parameters are given the template rounds the first number to the number of significant figures given by the second.
Examples
Two parameters
{{significant figures|123.456|7}}? 123.4560{{significant figures|123.456|6}}? 123.456{{significant figures|123.456|5}}? 123.46{{significant figures|123.456|4}}? 123.5
{{significant figures|123,456|3}}? 123,000{{significant figures|12345.6|3}}? 12,300{{significant figures|1234.56|3}}? 1,230{{significant figures|12.3456|3}}? 12.3{{significant figures|1.23456|3}}? 1.23
{{significant figures|.123456|3}}? 0.123{{significant figures|.0123456|3}}? 0.0123{{significant figures|.00123456|3}}? 0.00123{{significant figures|0.123456|3}}? 0.123{{significant figures|0.0123456|3}}? 0.0123{{significant figures|0.00123456|3}}? 0.00123
{{significant figures|123.456|2}}? 120{{significant figures|123.456|1}}? 100{{significant figures|123.456|0}}? 0
{{significant figures|987654321|9}}? 987,654,321{{significant figures|987654321|8}}? 987,654,320{{significant figures|987654321|7}}? 987,654,300{{significant figures|987654321|6}}? 987,654,000{{significant figures|987654321|5}}? 987,650,000{{significant figures|987654321|4}}? 987,700,000{{significant figures|987654321|3}}? 988,000,000{{significant figures|987654321|2}}? 990,000,000{{significant figures|987654321|1}}? 1,000,000,000
One parameter
{{significant figures|123400}}? 4{{significant figures|12340}}? 4{{significant figures|1234}}? 4{{significant figures|123.4}}? 4{{significant figures|12.34}}? 4{{significant figures|1.234}}? 4
{{significant figures|0.1234}}? 4{{significant figures|0.01234}}? 4{{significant figures|0.001234}}? 4{{significant figures|.1234}}? 4{{significant figures|.01234}}? 4{{significant figures|.001234}}? 4
{{significant figures|-123.4}}? 4{{significant figures|-12.34}}? 4{{significant figures|-1.234}}? 4
Supporting templates and modules
- {{Significant figures/rnd}}, which uses {{Template:Round}}, which uses {{#invoke:Math|precision_format}}
- {{Significant figures/sum}}, which uses {{Precision}}, which uses {{#invoke:Math|precision}}
- {{Order of magnitude}}