PreviousPrime (Float function): Difference between revisions

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{{Template:Float:PreviousPrime subtitle}}
{{Template:Float:PreviousPrime subtitle}}


This [[Intrinsic classes|intrinsic]] function returns the [http://en.wikipedia.org/wiki/Prime_number prime number] that immediately precedes the method
The <var>PreviousPrime</var> [[Intrinsic classes|intrinsic]] function returns the [http://en.wikipedia.org/wiki/Prime_number prime number] that immediately precedes the method object value.
object value.


The <var>PreviousPrime</var> function is available as of version 7.3 of the <var class=product>Sirius Mods</var>.
==Syntax==
==Syntax==
{{Template:Float:PreviousPrime syntax}}
{{Template:Float:PreviousPrime syntax}}
===Syntax terms===
===Syntax terms===
<table class="syntaxTable">
<table class="syntaxTable">
<tr><th>%value</th>
<tr><th>%number</th>
<td>A numeric variable to receive the method result. </td></tr>
<td>A numeric variable to receive the method result. </td></tr>
<tr><th>number</th>
 
<tr><th>float</th>
<td>A <var>Float</var> value.</td></tr>
<td>A <var>Float</var> value.</td></tr>
</table>
</table>
==Usage notes==
==Usage notes==
*The method object value is initially rounded to the nearest integer before the preceding prime is determined.
<ul>
*If ''number'' rounds to 2 or less or is greater than 2<sup>31</sup>-1, the request is cancelled.
<li>The method object value, <var class="term">float</var>, is initially rounded to the nearest integer before the preceding prime is determined.
*<var>PreviousPrime</var> always returns a value lower than the method object value, even if the method object value is prime.
 
<li>If <var class="term">float</var> rounds to 2 or less or is greater than 2<sup>31</sup>-1, the request is cancelled.
 
<li><var>PreviousPrime</var> always returns a value lower than the current <var class="term">float</var> value, even if <var class="term">float</var> is currently prime.
 
<li><var>PreviousPrime</var> is available as of <var class="product">Sirius Mods</var> Version 7.3.
</ul>
 
==Examples==
==Examples==
The following statement returns "''2.8:previousPrime = 2''".
The following statement returns <code>2.8:previousPrime = 2</code>.
<p class="code">PrintText {~} = {2.8:previousPrime}
<p class="code">[[PrintText statement|printText]] {~} = {2.8:previousPrime}
</p>


</p>
==See also==
==See also==
{{Template:Float:PreviousPrime footer}}
{{Template:Float:PreviousPrime footer}}
[[List of intrinsic Float methods]]
<!--
<section begin=dpl_desc />
Find previous prime number
<section end=dpl_desc />
-->

Latest revision as of 18:05, 2 November 2012

Find greatest prime smaller than this number (Float class)


The PreviousPrime intrinsic function returns the prime number that immediately precedes the method object value.

Syntax

%number = float:PreviousPrime

Syntax terms

%number A numeric variable to receive the method result.
float A Float value.

Usage notes

  • The method object value, float, is initially rounded to the nearest integer before the preceding prime is determined.
  • If float rounds to 2 or less or is greater than 231-1, the request is cancelled.
  • PreviousPrime always returns a value lower than the current float value, even if float is currently prime.
  • PreviousPrime is available as of Sirius Mods Version 7.3.

Examples

The following statement returns 2.8:previousPrime = 2.

printText {~} = {2.8:previousPrime}

See also