functions in gamma.i - l

    ln_gamma(z)  


returns natural log of the gamma function.  
Error is less than 1e-13 for real part of z>=1.  
Use lngamma if you know that all z>=1, or if you don't care much about  
accuracy for z<1.  
Interpreted function, defined at i/gamma.i   line 16  

    lngamma(x)  


returns natural log of the gamma function.  
Error is less than 1e-13 for real part of x>=1.  
Use ln_gamma if some x<1.  
Interpreted function, defined at i/gamma.i   line 37