$Gamma: Difference between revisions
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The <var>$Gamma</var> function returns the value: | The <var>$Gamma</var> function returns the value: | ||
<p class="code"><sub>0</sub>∫<sup>∞</sup> u<sup>x-1</sup> e<sup>-u</sup> du </p> | |||
==Syntax== | ==Syntax== | ||
Revision as of 15:22, 10 April 2013
Gamma function
Most Sirius $functions have been deprecated in favor of Object Oriented methods. There is currently no direct OO equivalent for the $Gamma function.
The $Gamma function returns the value:
0∫∞ ux-1 e-u du
Syntax
%num = $Gamma(x)
If x is not within the range 0 < x < 57.5744, 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.