「モジュール:Math/doc」を編集中 (節単位)

== precision_format ==

 &#123;{#invoke:math|precision_format|''value_string''|''precision''}}

<syntaxhighlight lang="lua">
mm._precision_format(value_string, precision)
</syntaxhighlight>

Rounds a number to the specified precision and formats according to rules originally used for {{tl|Rnd}}.  Output is a string.

Parameter <var>precision</var> should be an integer number of digits after the decimal point. Negative values are permitted. Non-integers give unexpected results. Positive values greater than the input precision add zero-padding, negative values greater than the input order can consume all digits.

Formatting 8,765.567 with {{tlc|#invoke:Math|precision_format|8765.567|<var>precision</var>}} gives:
{|class="wikitable"
|+
!<code><var>precision</var></code>!!Result
|-
|style="text-align:right"|2||{{#invoke:Math|precision_format|8765.567|2}}
|-
|style="text-align:right"| -2||{{#invoke:Math|precision_format|8765.567|-2}}
|-
|style="text-align:right"|6||{{#invoke:Math|precision_format|8765.567|6}}
|-
|style="text-align:right"| -6||{{#invoke:Math|precision_format|8765.567|-6}}
|-
|style="text-align:right"|2.5||{{#invoke:Math|precision_format|8765.567|2.5}}
|-
|style="text-align:right"| -2.5||{{#invoke:Math|precision_format|8765.567|-2.5}}
|}