$LGamma: Difference between revisions
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==Usage notes== | ==Usage notes== | ||
<ul> | <ul> | ||
<li>If ''x'' is not in the range 0 < ''x'' < 4.2913 * 10 | <li>If ''x'' is not in the range 0 < ''x'' < 4.2913 * 10<sup>73</sup>, | ||
an error message is printed and a 0 is returned. | an error message is printed and a 0 is returned. | ||
Revision as of 11:41, 22 August 2014
LGamma function
Note: 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 * 1073, 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.