Log_gamma
Definition:
/math-0e8b5da3b520060743f79565c953e874.png "log\_gamma = log\_gamma(x)")
evaluates /math-2a31703dd90bf1938d4fbe3e3c317d2e.png "\ln \Gamma (x)")
.x > 0. It is based on Chebyshev expansions.
If x is too large there is a danger of setting overflow so the function evaluation must fail.
For more information please review the s14abc function in the NAG document.
Parameters:
- x (input, double)
- The argument x of the function.
- Constraint: x > 0.0.
/math-1a0cce6e9ddee9475a2d548d5ed7b644.png "log gamma")
(output, double)- The value of
/math-dc16e8d280f4aca44dcd9a880e754476.png "\ln\Gamma (x)")
, x > 0