lgamma_rf
Description:
Returns the natural logarithm of the absolute value of the Gamma function.
Note: 
      
        
    
    Remember to link the math library: valac -X -lm ... 
The sign of the Gamma function is returned in the second parameter.
It is 1 when the Gamma function is positive or zero, -1 when it is negative.
Parameters:
| x0 | 
           A numeric value.  | 
      
| signgamp | 
           GLib.Math.lgamma_rf sets signgamp to 1 when the Gamma function is positive or zero, -1 when it is negative.  | 
      
Namespace: GLib.Math
  
  Package: glib-2.0