github.com/afumu/libc@v0.0.6/musl/src/math/lgamma.c (about)

     1  #include <math.h>
     2  #include "libm.h"
     3  
     4  double lgamma(double x)
     5  {
     6  	return __lgamma_r(x, &__signgam);
     7  }