tgamma

tgamma, tgammaf, tgammal

Defined in header <math.h>
float       tgammaf( float arg );
(1) (since C99)
double      tgamma( double arg );
(2) (since C99)
long double tgammal( long double arg );
(3) (since C99)
Defined in header <tgmath.h>
#define tgamma( a