$LGamma: Difference between revisions
Jump to navigation
Jump to search
(Automatically generated page update) |
No edit summary |
||
| Line 2: | Line 2: | ||
<p class="warning">Most Sirius $functions have been deprecated in favor of Object Oriented | <p class="warning">Most Sirius $functions have been deprecated in favor of Object Oriented | ||
methods. There is currently no direct OO equivalent for the $LGamma function.</p> | methods. There is currently no direct OO equivalent for the $LGamma function.</p> | ||
The <var>$LGamma</var> function returns the value: | The <var>$LGamma</var> function returns the value: | ||
<p class="code">log<sub>e</sub> <sub>0</sub>∫<sup>∞</sup> u<sup>x-1</sup> e<sup>-u</sup> du </p> | |||
==Syntax== | ==Syntax== | ||
<p class="syntax"><span class="term">%num</span><span class="literal"> = $LGamma(</span><span class="term">x</span><span class="literal">)</span> </p> | <p class="syntax"><span class="term">%num</span><span class="literal"> = $LGamma(</span><span class="term">x</span><span class="literal">)</span> </p> | ||
If ''x'' is not in the range 0 < ''x'' < 4.2913 * 10&'sup(73), | ==Usage notes== | ||
<ul> | |||
<li>If ''x'' is not in the range 0 < ''x'' < 4.2913 * 10&'sup(73), | |||
an error message is printed and a 0 is returned. | an error message is printed and a 0 is returned. | ||
{{Template:Math $functions note}} | <li>{{Template:Math $functions note}} | ||
</ul> | |||
[[Category: Mathematical $functions]] | |||
Revision as of 20:46, 10 April 2013
LGamma function
Most Sirius $functions have been deprecated in favor of Object Oriented methods. There is currently no direct OO equivalent for the $LGamma function.
The $LGamma function returns the value:
loge 0∫∞ ux-1 e-u du
Syntax
%num = $LGamma(x)
Usage notes
- If x is not in the range 0 < x < 4.2913 * 10&'sup(73), an error message is printed and a 0 is returned.
- See the SIRFUNC EXEC parameter for an explanation of when this high-performance, high-precision version of the IBM mathematical function from the Sirius Mods is used, as opposed to the version of the $function in the Model 204 FUND or FUNDLE CSECT.