Template:Order of magnitude
![]() | 此Template被引用於約127,000個頁面。 為了避免造成大規模的影響,所有對此Template的編輯應先於沙盒、測試樣例或您的沙盒上測試。 測試後無誤的版本可以一次性地加入此Template中,但是修改前請務必於討論頁發起討論。 模板引用數量會自動更新。 |
此模板目前正依照其他维基百科上的内容进行翻译。 (2023年3月5日) |
使用方法
This template calculates the (decimal) order of magnitude of numbers within the ranges 10300 to 10−300 and −10−300 to −10300.
The acceptable input and the output produced are optimised for use in other templates.
- The hyphen (not a true minus sign) is used for negative numbers.
- No separator is used for thousands.
- The template gives 0 for 0. Although, strictly speaking, this is mathematically incorrect it has been designed this way so as to be more useful in other templates. An important example of this is that when used by {{convert}} 0 °C or 0 °F is considered to be on the same order of magnitude as ±1 °C or ±1 °F respectively.
範例
{{Order of magnitude|123400}}
→ 5 [1]{{Order of magnitude|12340}}
→ 4 [2]{{Order of magnitude|1234}}
→ 3 [3]{{Order of magnitude|123.4}}
→ 2 [4]{{Order of magnitude|12.34}}
→ 1 [5]{{Order of magnitude|1.234}}
→ 0 [6]{{Order of magnitude|.1234}}
→ -1 [7]{{Order of magnitude|.01234}}
→ -2 [8]{{Order of magnitude|0}}
→ 0 [9]- Template:Xpdoc
錯誤用法
The input must be an unformatted number, or the template will emit errors:
{{Order of magnitude|}}
→ Expression error: Unexpected = operator{{Order of magnitude|123,400}}
→ Expression error: Unrecognised punctuation character ","{{Order of magnitude|foo}}
→ Expression error: Unrecognised word "foo"
技術要點
This template calculates the order of magnitude of a number, using the natural logarithm of the absolute value of the number, divided by the log of 10. The amount is adjusted for truncation error in the digital format, and the floor number of the results is used. The magnitude of fractions, such as 0+1/1000 (-3), will also be calculated. The code uses four expansion-depth levels.
模板數據
This template calculates the order of magnitude of numbers within the ranges 10^300 to 10^−300 and −10^−300 to −10^300.
参数 | 描述 | 类型 | 状态 | |
---|---|---|---|---|
Number | 1 | The number to find the order of magnitude of | 数字 | 必需 |
上述文档嵌入自Template:Order of magnitude/doc。 (编辑 | 历史) 编者可以在本模板的沙盒 (创建 | 镜像)和测试样例 (创建)页面进行实验。 请在/doc子页面中添加分类。本模板的子页面。 |