C/math.h/lgamma

    
//Declaration: float lgammaf(float arg); 
               double lgamma(double arg); 
               long double lgammal(long double arg);  
 
    
  
  #include <math.h>
  #include <stdio.h>
  int main(void)
  {
    printf("%f", lgammaf (1.2));
    return 0;
  }
         
        /*
-0.085374*/