Template:Significant figures/doc

This is a documentation subpage for Template:Significant figures.
It contains usage information, categories and other content that is not part of the original template page.

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This template has two different functions dependent on input.

1. 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.
2. 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}} gives 123.4560 [1]
• {{significant figures|123.456|6}} gives 123.456 [2]
• {{significant figures|123.456|5}} gives 123.46 [3]
• {{significant figures|123.456|4}} gives 123.5 [4]

---

• {{significant figures|123,456|3}} gives 123,000 [5]
• {{significant figures|12345.6|3}} gives 12,300 [6]
• {{significant figures|1234.56|3}} gives 1,230 [7]
• {{significant figures|12.3456|3}} gives 12.3 [8]
• {{significant figures|1.23456|3}} gives 1.23 [9]

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• {{significant figures|.123456|3}} gives 0.123 [10]
• {{significant figures|.0123456|3}} gives 0.0123 [11]
• {{significant figures|.00123456|3}} gives 0.00123 [12]
• {{significant figures|0.123456|3}} gives 0.123 [13]
• {{significant figures|0.0123456|3}} gives 0.0123 [14]
• {{significant figures|0.00123456|3}} gives 0.00123 [15]

---

• {{significant figures|123.456|2}} gives 120 [16]
• {{significant figures|123.456|1}} gives 100 [17]
• {{significant figures|123.456|0}} gives 0 [18]

---

• {{significant figures|987654321|9}} gives 987,654,321 [19]
• {{significant figures|987654321|8}} gives 987,654,320 [20]
• {{significant figures|987654321|7}} gives 987,654,300 [21]
• {{significant figures|987654321|6}} gives 987,654,000 [22]
• {{significant figures|987654321|5}} gives 987,650,000 [23]
• {{significant figures|987654321|4}} gives 987,700,000 [24]
• {{significant figures|987654321|3}} gives 988,000,000 [25]
• {{significant figures|987654321|2}} gives 990,000,000 [26]
• {{significant figures|987654321|1}} gives 1,000,000,000 [27]

One parameter

• {{significant figures|123400}} → 4 [28]
• {{significant figures|12340}} → 4 [29]
• {{significant figures|1234}} → 4 [30]
• {{significant figures|123.4}} → 4 [31]
• {{significant figures|12.34}} → 4 [32]
• {{significant figures|1.234}} → 4 [33]

---

• {{significant figures|0.1234}} → 4 [34]
• {{significant figures|0.01234}} → 4 [35]
• {{significant figures|0.001234}} → 4 [36]
• {{significant figures|.1234}} → 4 [37]
• {{significant figures|.01234}} → 4 [38]
• {{significant figures|.001234}} → 4 [39]

---

• {{significant figures|-123.4}} → 4 [40]
• {{significant figures|-12.34}} → 4 [41]
• {{significant figures|-1.234}} → 4 [42]

Supporting templates and modules

• {{Significant figures/rnd}}, which uses {{Rnd}}, which uses {{#invoke:Math|precision_format}}
• {{Significant figures/sum}}, which uses {{Precision}}, which uses {{#invoke:Math|precision}}
• {{Order of magnitude}}